20102120021211 has 16 divisors (see below), whose sum is σ = 26930759455488. Its totient is φ = 13337451237600.

The previous prime is 20102120021197. The next prime is 20102120021231. The reversal of 20102120021211 is 11212002120102.

It is not a de Polignac number, because 20102120021211 - 2¹⁹ = 20102119496923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20102120021231) 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, 18871045 + ... + 19907801.

It is an arithmetic number, because the mean of its divisors is an integer number (1683172465968).

Almost surely, 2^{20102120021211} is an apocalyptic number.

20102120021211 is a deficient number, since it is larger than the sum of its proper divisors (6828639434277).

20102120021211 is a wasteful number, since it uses less digits than its factorization.

20102120021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067602.

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

Adding to 20102120021211 its reverse (11212002120102), we get a palindrome (31314122141313).

The spelling of 20102120021211 in words is "twenty trillion, one hundred two billion, one hundred twenty million, twenty-one thousand, two hundred eleven".