122020313136 has 80 divisors (see below), whose sum is σ = 332164573440. Its totient is φ = 38491511040.

The previous prime is 122020313131. The next prime is 122020313141. The reversal of 122020313136 is 631313020221.

It is an interprime number because it is at equal distance from previous prime (122020313131) and next prime (122020313141).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (122020313131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 787101 + ... + 929283.

It is an arithmetic number, because the mean of its divisors is an integer number (4152057168).

Almost surely, 2^122020313136 is an apocalyptic number.

122020313136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122020313136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166082286720).

122020313136 is an abundant number, since it is smaller than the sum of its proper divisors (210144260304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122020313136 is a wasteful number, since it uses less digits than its factorization.

122020313136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143154 (or 143148 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 122020313136 its reverse (631313020221), we get a palindrome (753333333357).

The spelling of 122020313136 in words is "one hundred twenty-two billion, twenty million, three hundred thirteen thousand, one hundred thirty-six".