1210010021121 has 16 divisors (see below), whose sum is σ = 1793222400960. Its totient is φ = 719502813120.

The previous prime is 1210010021113. The next prime is 1210010021147. The reversal of 1210010021121 is 1211200100121.

It is not a de Polignac number, because 1210010021121 - 2³ = 1210010021113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210010021097 and 1210010021106.

It is not an unprimeable number, because it can be changed into a prime (1210010021111) 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, 345913066 + ... + 345916563.

It is an arithmetic number, because the mean of its divisors is an integer number (112076400060).

Almost surely, 2^{1210010021121} is an apocalyptic number.

1210010021121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210010021121 is a deficient number, since it is larger than the sum of its proper divisors (583212379839).

1210010021121 is a wasteful number, since it uses less digits than its factorization.

1210010021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691829696.

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

Adding to 1210010021121 its reverse (1211200100121), we get a palindrome (2421210121242).

The spelling of 1210010021121 in words is "one trillion, two hundred ten billion, ten million, twenty-one thousand, one hundred twenty-one".