121233023100 has 216 divisors, whose sum is σ = 459830131488. Its totient is φ = 26080358400.

The previous prime is 121233023077. The next prime is 121233023101. The reversal of 121233023100 is 1320332121.

121233023100 is a `hidden beast` number, since 1 + 21 + 2 + 330 + 2 + 310 + 0 = 666.

It is a super-2 number, since 2×121233023100² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121233023101) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 458881 + ... + 673080.

Almost surely, 2^121233023100 is an apocalyptic number.

121233023100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121233023100 is an abundant number, since it is smaller than the sum of its proper divisors (338597108388).

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

121233023100 is a wasteful number, since it uses less digits than its factorization.

121233023100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132005 (or 1131995 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 121233023100 its reverse (1320332121), we get a palindrome (122553355221).

The spelling of 121233023100 in words is "one hundred twenty-one billion, two hundred thirty-three million, twenty-three thousand, one hundred".