211020221212210 has 16 divisors (see below), whose sum is σ = 379839738600000. Its totient is φ = 84407346169776.

The previous prime is 211020221212153. The next prime is 211020221212211. The reversal of 211020221212210 is 12212122020112.

It is not an unprimeable number, because it can be changed into a prime (211020221212211) 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, 91594710 + ... + 93870289.

It is an arithmetic number, because the mean of its divisors is an integer number (23739983662500).

Almost surely, 2^{211020221212210} is an apocalyptic number.

211020221212210 is a deficient number, since it is larger than the sum of its proper divisors (168819517387790).

211020221212210 is a wasteful number, since it uses less digits than its factorization.

211020221212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185578785.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 211020221212210 its reverse (12212122020112), we get a palindrome (223232343232322).

The spelling of 211020221212210 in words is "two hundred eleven trillion, twenty billion, two hundred twenty-one million, two hundred twelve thousand, two hundred ten".