201021211220110 has 32 divisors (see below), whose sum is σ = 362079752493312. Its totient is φ = 80354804221440.

The previous prime is 201021211220069. The next prime is 201021211220173. The reversal of 201021211220110 is 11022112120102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 784556220 + ... + 784812400.

It is an arithmetic number, because the mean of its divisors is an integer number (11314992265416).

Almost surely, 2^{201021211220110} is an apocalyptic number.

201021211220110 is a deficient number, since it is larger than the sum of its proper divisors (161058541273202).

201021211220110 is a wasteful number, since it uses less digits than its factorization.

201021211220110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308268.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201021211220110 its reverse (11022112120102), we get a palindrome (212043323340212).

The spelling of 201021211220110 in words is "two hundred one trillion, twenty-one billion, two hundred eleven million, two hundred twenty thousand, one hundred ten".