123222001020 has 24 divisors (see below), whose sum is σ = 345021603024. Its totient is φ = 32859200256.

The previous prime is 123222001003. The next prime is 123222001037. The reversal of 123222001020 is 20100222321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123222001003) and next prime (123222001037).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026849949 + ... + 1026850068.

It is an arithmetic number, because the mean of its divisors is an integer number (14375900126).

Almost surely, 2^123222001020 is an apocalyptic number.

123222001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123222001020 is an abundant number, since it is smaller than the sum of its proper divisors (221799602004).

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

123222001020 is a wasteful number, since it uses less digits than its factorization.

123222001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053700029 (or 2053700027 counting only the distinct ones).

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

Adding to 123222001020 its reverse (20100222321), we get a palindrome (143322223341).

The spelling of 123222001020 in words is "one hundred twenty-three billion, two hundred twenty-two million, one thousand, twenty".