2021221220110 has 16 divisors (see below), whose sum is σ = 3638265206400. Its totient is φ = 808473596896.

The previous prime is 2021221220107. The next prime is 2021221220141. The reversal of 2021221220110 is 110221221202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1282750 + ... + 2384929.

It is an arithmetic number, because the mean of its divisors is an integer number (227391575400).

Almost surely, 2^{2021221220110} is an apocalyptic number.

2021221220110 is a deficient number, since it is larger than the sum of its proper divisors (1617043986290).

2021221220110 is a wasteful number, since it uses less digits than its factorization.

2021221220110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722795.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2021221220110 its reverse (110221221202), we get a palindrome (2131442441312).

The spelling of 2021221220110 in words is "two trillion, twenty-one billion, two hundred twenty-one million, two hundred twenty thousand, one hundred ten".