1210101122121 has 16 divisors (see below), whose sum is σ = 1657115192064. Its totient is φ = 784911613824.

The previous prime is 1210101122107. The next prime is 1210101122137. The reversal of 1210101122121 is 1212211010121.

It is a happy number.

It is not a de Polignac number, because 1210101122121 - 2⁵ = 1210101122089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1210101122121.

It is not an unprimeable number, because it can be changed into a prime (1210101122161) 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, 5664576 + ... + 5874318.

It is an arithmetic number, because the mean of its divisors is an integer number (103569699504).

Almost surely, 2^{1210101122121} is an apocalyptic number.

It is an amenable number.

1210101122121 is a deficient number, since it is larger than the sum of its proper divisors (447014069943).

1210101122121 is a wasteful number, since it uses less digits than its factorization.

1210101122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261760.

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

Adding to 1210101122121 its reverse (1212211010121), we get a palindrome (2422312132242).

The spelling of 1210101122121 in words is "one trillion, two hundred ten billion, one hundred one million, one hundred twenty-two thousand, one hundred twenty-one".