20211210202101 has 16 divisors (see below), whose sum is σ = 27052186347648. Its totient is φ = 13422285216000.

The previous prime is 20211210202069. The next prime is 20211210202123. The reversal of 20211210202101 is 10120201211202.

It is not a de Polignac number, because 20211210202101 - 2⁵ = 20211210202069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211210203101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11440545 + ... + 13088486.

It is an arithmetic number, because the mean of its divisors is an integer number (1690761646728).

Almost surely, 2^{20211210202101} is an apocalyptic number.

It is an amenable number.

20211210202101 is a deficient number, since it is larger than the sum of its proper divisors (6840976145547).

20211210202101 is a wasteful number, since it uses less digits than its factorization.

20211210202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24530092.

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

Adding to 20211210202101 its reverse (10120201211202), we get a palindrome (30331411413303).

The spelling of 20211210202101 in words is "twenty trillion, two hundred eleven billion, two hundred ten million, two hundred two thousand, one hundred one".