121022012211100 has 648 divisors, whose sum is σ = 362302072266624. Its totient is φ = 34753961088000.

The previous prime is 121022012211071. The next prime is 121022012211119. The reversal of 121022012211100 is 1112210220121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 4169851189 + ... + 4169880211.

Almost surely, 2^{121022012211100} is an apocalyptic number.

121022012211100 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 121022012211100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181151036133312).

121022012211100 is an abundant number, since it is smaller than the sum of its proper divisors (241280060055524).

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

121022012211100 is a wasteful number, since it uses less digits than its factorization.

121022012211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29627 (or 29602 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121022012211100 its reverse (1112210220121), we get a palindrome (122134222431221).

The spelling of 121022012211100 in words is "one hundred twenty-one trillion, twenty-two billion, twelve million, two hundred eleven thousand, one hundred".