2021421110 has 16 divisors (see below), whose sum is σ = 3639638016. Its totient is φ = 808328448.

The previous prime is 2021421107. The next prime is 2021421119. The reversal of 2021421110 is 111241202.

It is a happy number.

It is a super-2 number, since 2×2021421110² = 8172286607907264200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021421119) 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, 7622 + ... + 64038.

It is an arithmetic number, because the mean of its divisors is an integer number (227477376).

Almost surely, 2^2021421110 is an apocalyptic number.

2021421110 is a deficient number, since it is larger than the sum of its proper divisors (1618216906).

2021421110 is a wasteful number, since it uses less digits than its factorization.

2021421110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60007.

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

The square root of 2021421110 is about 44960.2169701170. The cubic root of 2021421110 is about 1264.4032367767.

Adding to 2021421110 its reverse (111241202), we get a palindrome (2132662312).

The spelling of 2021421110 in words is "two billion, twenty-one million, four hundred twenty-one thousand, one hundred ten".