2102010020121 has 32 divisors (see below), whose sum is σ = 3111537437568. Its totient is φ = 1251608739840.

The previous prime is 2102010020059. The next prime is 2102010020179. The reversal of 2102010020121 is 1210200102012.

It is not a de Polignac number, because 2102010020121 - 2²⁵ = 2101976465689 is a prime.

It is a super-2 number, since 2×2102010020121² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2102010020097 and 2102010020106.

It is not an unprimeable number, because it can be changed into a prime (2102010020221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1958080 + ... + 2835153.

It is an arithmetic number, because the mean of its divisors is an integer number (97235544924).

Almost surely, 2^{2102010020121} is an apocalyptic number.

It is an amenable number.

2102010020121 is a deficient number, since it is larger than the sum of its proper divisors (1009527417447).

2102010020121 is a wasteful number, since it uses less digits than its factorization.

2102010020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4793481.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2102010020121 its reverse (1210200102012), we get a palindrome (3312210122133).

The spelling of 2102010020121 in words is "two trillion, one hundred two billion, ten million, twenty thousand, one hundred twenty-one".