2021212012212 has 48 divisors (see below), whose sum is σ = 5240270407680. Its totient is φ = 673725622464.

The previous prime is 2021212012189. The next prime is 2021212012307. The reversal of 2021212012212 is 2122102121202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 7933888 + ... + 8184680.

It is an arithmetic number, because the mean of its divisors is an integer number (109172300160).

Almost surely, 2^{2021212012212} is an apocalyptic number.

It is an amenable number.

2021212012212 is an abundant number, since it is smaller than the sum of its proper divisors (3219058395468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021212012212 is a wasteful number, since it uses less digits than its factorization.

2021212012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325429 (or 325421 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2021212012212 its reverse (2122102121202), we get a palindrome (4143314133414).

The spelling of 2021212012212 in words is "two trillion, twenty-one billion, two hundred twelve million, twelve thousand, two hundred twelve".