1002210122121 has 48 divisors (see below), whose sum is σ = 1463961643200. Its totient is φ = 609512656896.

The previous prime is 1002210122117. The next prime is 1002210122131. The reversal of 1002210122121 is 1212210122001.

It is not a de Polignac number, because 1002210122121 - 2² = 1002210122117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002210122121.

It is not an unprimeable number, because it can be changed into a prime (1002210122131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119977881 + ... + 119986233.

It is an arithmetic number, because the mean of its divisors is an integer number (30499200900).

Almost surely, 2^{1002210122121} is an apocalyptic number.

It is an amenable number.

1002210122121 is a deficient number, since it is larger than the sum of its proper divisors (461751521079).

1002210122121 is a wasteful number, since it uses less digits than its factorization.

1002210122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11130 (or 11117 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1002210122121 its reverse (1212210122001), we get a palindrome (2214420244122).

The spelling of 1002210122121 in words is "one trillion, two billion, two hundred ten million, one hundred twenty-two thousand, one hundred twenty-one".