121010201220121 has 16 divisors (see below), whose sum is σ = 128970004322304. Its totient is φ = 113275725351184.

The previous prime is 121010201220113. The next prime is 121010201220127. The reversal of 121010201220121 is 121022102010121.

It is not a de Polignac number, because 121010201220121 - 2³ = 121010201220113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121010201220095 and 121010201220104.

It is not an unprimeable number, because it can be changed into a prime (121010201220127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6621510 + ... + 16907536.

It is an arithmetic number, because the mean of its divisors is an integer number (8060625270144).

Almost surely, 2^{121010201220121} is an apocalyptic number.

It is an amenable number.

121010201220121 is a deficient number, since it is larger than the sum of its proper divisors (7959803102183).

121010201220121 is a wasteful number, since it uses less digits than its factorization.

121010201220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10296980.

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

Adding to 121010201220121 its reverse (121022102010121), we get a palindrome (242032303230242).

The spelling of 121010201220121 in words is "one hundred twenty-one trillion, ten billion, two hundred one million, two hundred twenty thousand, one hundred twenty-one".