20101210212021 has 8 divisors (see below), whose sum is σ = 26802134130624. Its totient is φ = 13400546550720.

The previous prime is 20101210211959. The next prime is 20101210212133. The reversal of 20101210212021 is 12021201210102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20101210212021 - 2¹⁰ = 20101210210997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101210212521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64884036 + ... + 65193101.

It is an arithmetic number, because the mean of its divisors is an integer number (3350266766328).

Almost surely, 2^{20101210212021} is an apocalyptic number.

It is an amenable number.

20101210212021 is a deficient number, since it is larger than the sum of its proper divisors (6700923918603).

20101210212021 is a wasteful number, since it uses less digits than its factorization.

20101210212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130128651.

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

Adding to 20101210212021 its reverse (12021201210102), we get a palindrome (32122411422123).

The spelling of 20101210212021 in words is "twenty trillion, one hundred one billion, two hundred ten million, two hundred twelve thousand, twenty-one".