2021200212112 has 10 divisors (see below), whose sum is σ = 3916075410998. Its totient is φ = 1010600106048.

The previous prime is 2021200212049. The next prime is 2021200212113. The reversal of 2021200212112 is 2112120021202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1723821947136 + 297378264976 = 1312944^2 + 545324^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 126325013257 = 2021200212112 / (2 + 0 + 2 + 1 + 2 + 0 + 0 + 2 + 1 + 2 + 1 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (2021200212113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63162506613 + ... + 63162506644.

Almost surely, 2^{2021200212112} is an apocalyptic number.

It is an amenable number.

2021200212112 is a deficient number, since it is larger than the sum of its proper divisors (1894875198886).

2021200212112 is a wasteful number, since it uses less digits than its factorization.

2021200212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126325013265 (or 126325013259 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2021200212112 its reverse (2112120021202), we get a palindrome (4133320233314).

The spelling of 2021200212112 in words is "two trillion, twenty-one billion, two hundred million, two hundred twelve thousand, one hundred twelve".