211022211200021 has 16 divisors (see below), whose sum is σ = 237139108881024. Its totient is φ = 186317643593664.

The previous prime is 211022211199957. The next prime is 211022211200027. The reversal of 211022211200021 is 120002112220112.

It is not a de Polignac number, because 211022211200021 - 2⁶ = 211022211199957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211022211200027) 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, 13261715 + ... + 24452351.

It is an arithmetic number, because the mean of its divisors is an integer number (14821194305064).

Almost surely, 2^{211022211200021} is an apocalyptic number.

It is an amenable number.

211022211200021 is a deficient number, since it is larger than the sum of its proper divisors (26116897681003).

211022211200021 is a wasteful number, since it uses less digits than its factorization.

211022211200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11253740.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211022211200021 its reverse (120002112220112), we get a palindrome (331024323420133).

The spelling of 211022211200021 in words is "two hundred eleven trillion, twenty-two billion, two hundred eleven million, two hundred thousand, twenty-one".