121010021021021 has 8 divisors (see below), whose sum is σ = 132011135805024. Its totient is φ = 110008940200720.

The previous prime is 121010021020943. The next prime is 121010021021051. The reversal of 121010021021021 is 120120120010121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121010021021021 - 2³⁴ = 120992841151837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121010021020987 and 121010021021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010021021051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732986 + ... + 15574251.

It is an arithmetic number, because the mean of its divisors is an integer number (16501391975628).

Almost surely, 2^{121010021021021} is an apocalyptic number.

121010021021021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121010021021021 is a deficient number, since it is larger than the sum of its proper divisors (11001114784003).

121010021021021 is a wasteful number, since it uses less digits than its factorization.

121010021021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16981851.

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

Adding to 121010021021021 its reverse (120120120010121), we get a palindrome (241130141031142).

The spelling of 121010021021021 in words is "one hundred twenty-one trillion, ten billion, twenty-one million, twenty-one thousand, twenty-one".