1023121322100 has 72 divisors (see below), whose sum is σ = 3289145592320. Its totient is φ = 272832351840.

The previous prime is 1023121322099. The next prime is 1023121322123. The reversal of 1023121322100 is 12231213201.

1023121322100 is a `hidden beast` number, since 1 + 0 + 231 + 213 + 221 + 0 + 0 = 666.

1023121322100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189464212 + ... + 189469611.

Almost surely, 2^{1023121322100} is an apocalyptic number.

1023121322100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023121322100 is an abundant number, since it is smaller than the sum of its proper divisors (2266024270220).

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

1023121322100 is a wasteful number, since it uses less digits than its factorization.

1023121322100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378933846 (or 378933833 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1023121322100 its reverse (12231213201), we get a palindrome (1035352535301).

The spelling of 1023121322100 in words is "one trillion, twenty-three billion, one hundred twenty-one million, three hundred twenty-two thousand, one hundred".