121121120211000 has 384 divisors, whose sum is σ = 467660637849600. Its totient is φ = 25555224614400.

The previous prime is 121121120210939. The next prime is 121121120211017. The reversal of 121121120211000 is 112021121121.

It is a happy number.

It is a super-2 number, since 2×121121120211000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 13515120 + ... + 20613119.

It is an arithmetic number, because the mean of its divisors is an integer number (1217866244400).

Almost surely, 2^{121121120211000} is an apocalyptic number.

121121120211000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121121120211000 is an abundant number, since it is smaller than the sum of its proper divisors (346539517638600).

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

121121120211000 is a wasteful number, since it uses less digits than its factorization.

121121120211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34128296 (or 34128269 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121121120211000 its reverse (112021121121), we get a palindrome (121233141332121).

The spelling of 121121120211000 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred twenty million, two hundred eleven thousand".