121101210211020 has 192 divisors, whose sum is σ = 382003168176000. Its totient is φ = 28458224492544.

The previous prime is 121101210211019. The next prime is 121101210211031. The reversal of 121101210211020 is 20112012101121.

It is a happy number.

It is a super-2 number, since 2×121101210211020² (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 an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28063915 + ... + 32090274.

It is an arithmetic number, because the mean of its divisors is an integer number (1989599834250).

Almost surely, 2^{121101210211020} is an apocalyptic number.

121101210211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121101210211020 is an abundant number, since it is smaller than the sum of its proper divisors (260901957964980).

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

121101210211020 is a wasteful number, since it uses less digits than its factorization.

121101210211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60154332 (or 60154330 counting only the distinct ones).

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

Adding to 121101210211020 its reverse (20112012101121), we get a palindrome (141213222312141).

The spelling of 121101210211020 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred ten million, two hundred eleven thousand, twenty".