121022112010100 has 288 divisors, whose sum is σ = 328083541309440. Its totient is φ = 37787867136000.

The previous prime is 121022112010099. The next prime is 121022112010201. The reversal of 121022112010100 is 1010211220121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3751327970 + ... + 3751360230.

It is an arithmetic number, because the mean of its divisors is an integer number (1139178962880).

Almost surely, 2^{121022112010100} is an apocalyptic number.

121022112010100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121022112010100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164041770654720).

121022112010100 is an abundant number, since it is smaller than the sum of its proper divisors (207061429299340).

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

121022112010100 is a wasteful number, since it uses less digits than its factorization.

121022112010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42499 (or 42492 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121022112010100 its reverse (1010211220121), we get a palindrome (122032323230221).

The spelling of 121022112010100 in words is "one hundred twenty-one trillion, twenty-two billion, one hundred twelve million, ten thousand, one hundred".