123122002020 has 48 divisors (see below), whose sum is σ = 345079428288. Its totient is φ = 32800360320.

The previous prime is 123122002013. The next prime is 123122002027. The reversal of 123122002020 is 20200221321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123122002013) and next prime (123122002027).

It is a super-4 number, since 4×123122002020⁴ (a number of 45 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (123122002027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 943654 + ... + 1066173.

It is an arithmetic number, because the mean of its divisors is an integer number (7189154756).

Almost surely, 2^123122002020 is an apocalyptic number.

123122002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123122002020 is an abundant number, since it is smaller than the sum of its proper divisors (221957426268).

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

123122002020 is a wasteful number, since it uses less digits than its factorization.

123122002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010860 (or 2010858 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 123122002020 its reverse (20200221321), we get a palindrome (143322223341).

The spelling of 123122002020 in words is "one hundred twenty-three billion, one hundred twenty-two million, two thousand, twenty".