20122112221002 has 48 divisors (see below), whose sum is σ = 47643785122752. Its totient is φ = 6087041948160.

The previous prime is 20122112220961. The next prime is 20122112221019. The reversal of 20122112221002 is 20012221122102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87950598 + ... + 88179089.

It is an arithmetic number, because the mean of its divisors is an integer number (992578856724).

Almost surely, 2^{20122112221002} is an apocalyptic number.

20122112221002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20122112221002 is an abundant number, since it is smaller than the sum of its proper divisors (27521672901750).

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

20122112221002 is a wasteful number, since it uses less digits than its factorization.

20122112221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176130283 (or 176130280 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20122112221002 its reverse (20012221122102), we get a palindrome (40134333343104).

The spelling of 20122112221002 in words is "twenty trillion, one hundred twenty-two billion, one hundred twelve million, two hundred twenty-one thousand, two".