2021121310 has 32 divisors (see below), whose sum is σ = 3921019200. Its totient is φ = 745659648.

The previous prime is 2021121293. The next prime is 2021121329. The reversal of 2021121310 is 131211202.

It is a super-2 number, since 2×2021121310² = 8169862699472232200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 176314 + ... + 187426.

It is an arithmetic number, because the mean of its divisors is an integer number (122531850).

Almost surely, 2^2021121310 is an apocalyptic number.

2021121310 is a deficient number, since it is larger than the sum of its proper divisors (1899897890).

2021121310 is a wasteful number, since it uses less digits than its factorization.

2021121310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12532.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2021121310 is about 44956.8827878446. The cubic root of 2021121310 is about 1264.3407251720.

Adding to 2021121310 its reverse (131211202), we get a palindrome (2152332512).

The spelling of 2021121310 in words is "two billion, twenty-one million, one hundred twenty-one thousand, three hundred ten".