2021420312 has 8 divisors (see below), whose sum is σ = 3790163100. Its totient is φ = 1010710152.

The previous prime is 2021420311. The next prime is 2021420399. The reversal of 2021420312 is 2130241202.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2021420312² = 8172280155532354688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021420311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126338762 + ... + 126338777.

Almost surely, 2^2021420312 is an apocalyptic number.

It is an amenable number.

2021420312 is a deficient number, since it is larger than the sum of its proper divisors (1768742788).

2021420312 is a wasteful number, since it uses less digits than its factorization.

2021420312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252677545 (or 252677541 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2021420312 is about 44960.2080956038. The cubic root of 2021420312 is about 1264.4030703931.

Adding to 2021420312 its reverse (2130241202), we get a palindrome (4151661514).

The spelling of 2021420312 in words is "two billion, twenty-one million, four hundred twenty thousand, three hundred twelve".