2021020102121 has 64 divisors (see below), whose sum is σ = 2270001024000. Its totient is φ = 1791411148800.

The previous prime is 2021020102051. The next prime is 2021020102139. The reversal of 2021020102121 is 1212010201202.

It is a cyclic number.

It is not a de Polignac number, because 2021020102121 - 2²² = 2021015907817 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2021020102096 and 2021020102105.

It is not an unprimeable number, because it can be changed into a prime (2021020105121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2120692181 + ... + 2120693133.

It is an arithmetic number, because the mean of its divisors is an integer number (35468766000).

Almost surely, 2^{2021020102121} is an apocalyptic number.

It is an amenable number.

2021020102121 is a deficient number, since it is larger than the sum of its proper divisors (248980921879).

2021020102121 is a wasteful number, since it uses less digits than its factorization.

2021020102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2021020102121 its reverse (1212010201202), we get a palindrome (3233030303323).

The spelling of 2021020102121 in words is "two trillion, twenty-one billion, twenty million, one hundred two thousand, one hundred twenty-one".