123211223020 has 24 divisors (see below), whose sum is σ = 260391623184. Its totient is φ = 48970574016.

The previous prime is 123211222991. The next prime is 123211223039. The reversal of 123211223020 is 20322112321.

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, 19616482 + ... + 19622761.

It is an arithmetic number, because the mean of its divisors is an integer number (10849650966).

Almost surely, 2^123211223020 is an apocalyptic number.

123211223020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123211223020 is an abundant number, since it is smaller than the sum of its proper divisors (137180400164).

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

123211223020 is a wasteful number, since it uses less digits than its factorization.

123211223020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39239409 (or 39239407 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 123211223020 its reverse (20322112321), we get a palindrome (143533335341).

The spelling of 123211223020 in words is "one hundred twenty-three billion, two hundred eleven million, two hundred twenty-three thousand, twenty".