211100022121 has 8 divisors (see below), whose sum is σ = 213095849760. Its totient is φ = 209104619328.

The previous prime is 211100022109. The next prime is 211100022169. The reversal of 211100022121 is 121220001112.

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

It is a cyclic number.

It is not a de Polignac number, because 211100022121 - 2²³ = 211091633513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211100002121) 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, 940785 + ... + 1143361.

It is an arithmetic number, because the mean of its divisors is an integer number (26636981220).

Almost surely, 2^211100022121 is an apocalyptic number.

It is an amenable number.

211100022121 is a deficient number, since it is larger than the sum of its proper divisors (1995827639).

211100022121 is a wasteful number, since it uses less digits than its factorization.

211100022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212423.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211100022121 its reverse (121220001112), we get a palindrome (332320023233).

The spelling of 211100022121 in words is "two hundred eleven billion, one hundred million, twenty-two thousand, one hundred twenty-one".