1220101010121 has 16 divisors (see below), whose sum is σ = 1877609478528. Its totient is φ = 690297600000.

The previous prime is 1220101010119. The next prime is 1220101010123. The reversal of 1220101010121 is 1210101010221.

It is an interprime number because it is at equal distance from previous prime (1220101010119) and next prime (1220101010123).

It is not a de Polignac number, because 1220101010121 - 2¹ = 1220101010119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220101010097 and 1220101010106.

It is not an unprimeable number, because it can be changed into a prime (1220101010123) 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, 287621880 + ... + 287626121.

It is an arithmetic number, because the mean of its divisors is an integer number (117350592408).

Almost surely, 2^{1220101010121} is an apocalyptic number.

It is an amenable number.

1220101010121 is a deficient number, since it is larger than the sum of its proper divisors (657508468407).

1220101010121 is a wasteful number, since it uses less digits than its factorization.

1220101010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575248112.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1220101010121 its reverse (1210101010221), we get a palindrome (2430202020342).

The spelling of 1220101010121 in words is "one trillion, two hundred twenty billion, one hundred one million, ten thousand, one hundred twenty-one".