2021121430 has 16 divisors (see below), whose sum is σ = 3639195504. Its totient is φ = 808187040.

The previous prime is 2021121413. The next prime is 2021121437. The reversal of 2021121430 is 341211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021121437) 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, 1465 + ... + 63595.

It is an arithmetic number, because the mean of its divisors is an integer number (227449719).

Almost surely, 2^2021121430 is an apocalyptic number.

2021121430 is a deficient number, since it is larger than the sum of its proper divisors (1618074074).

2021121430 is a wasteful number, since it uses less digits than its factorization.

2021121430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65391.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2021121430 is about 44956.8841224567. The cubic root of 2021121430 is about 1264.3407501946.

Adding to 2021121430 its reverse (341211202), we get a palindrome (2362332632).

The spelling of 2021121430 in words is "two billion, twenty-one million, one hundred twenty-one thousand, four hundred thirty".