2021012212 has 24 divisors (see below), whose sum is σ = 3623048352. Its totient is φ = 985908000.

The previous prime is 2021012183. The next prime is 2021012243. The reversal of 2021012212 is 2122101202.

It is a happy number.

It is a super-2 number, since 2×2021012212² = 8168980722106265888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021012192 and 2021012201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160962 + ... + 173062.

It is an arithmetic number, because the mean of its divisors is an integer number (150960348).

Almost surely, 2^2021012212 is an apocalyptic number.

It is an amenable number.

2021012212 is a deficient number, since it is larger than the sum of its proper divisors (1602036140).

2021012212 is a wasteful number, since it uses less digits than its factorization.

2021012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13119 (or 13117 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2021012212 is about 44955.6694088743. The cubic root of 2021012212 is about 1264.3179755024.

Adding to 2021012212 its reverse (2122101202), we get a palindrome (4143113414).

The spelling of 2021012212 in words is "two billion, twenty-one million, twelve thousand, two hundred twelve".