20212021210101 has 32 divisors (see below), whose sum is σ = 30931546736640. Its totient is φ = 11500184706624.

The previous prime is 20212021210037. The next prime is 20212021210219. The reversal of 20212021210101 is 10101212021202.

It is not a de Polignac number, because 20212021210101 - 2⁶ = 20212021210037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212021210301) 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, 6549591 + ... + 9128043.

It is an arithmetic number, because the mean of its divisors is an integer number (966610835520).

Almost surely, 2^{20212021210101} is an apocalyptic number.

20212021210101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20212021210101 is a deficient number, since it is larger than the sum of its proper divisors (10719525526539).

20212021210101 is a wasteful number, since it uses less digits than its factorization.

20212021210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580065.

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

Adding to 20212021210101 its reverse (10101212021202), we get a palindrome (30313233231303).

The spelling of 20212021210101 in words is "twenty trillion, two hundred twelve billion, twenty-one million, two hundred ten thousand, one hundred one".