102021022211 has 4 divisors (see below), whose sum is σ = 102239483112. Its totient is φ = 101802561312.

The previous prime is 102021022171. The next prime is 102021022249. The reversal of 102021022211 is 112220120201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102021022211 - 2²² = 102016827907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102021022111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109229750 + ... + 109230683.

It is an arithmetic number, because the mean of its divisors is an integer number (25559870778).

Almost surely, 2^102021022211 is an apocalyptic number.

102021022211 is a deficient number, since it is larger than the sum of its proper divisors (218460901).

102021022211 is an equidigital number, since it uses as much as digits as its factorization.

102021022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218460900.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102021022211 its reverse (112220120201), we get a palindrome (214241142412).

The spelling of 102021022211 in words is "one hundred two billion, twenty-one million, twenty-two thousand, two hundred eleven".