2081211772 has 12 divisors (see below), whose sum is σ = 3643733296. Its totient is φ = 1040145120.

The previous prime is 2081211763. The next prime is 2081211809. The reversal of 2081211772 is 2771121802.

It is a super-2 number, since 2×2081211772² = 8662884879822759968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104928 + ... + 123175.

Almost surely, 2^2081211772 is an apocalyptic number.

It is an amenable number.

2081211772 is a deficient number, since it is larger than the sum of its proper divisors (1562521524).

2081211772 is a wasteful number, since it uses less digits than its factorization.

2081211772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230388 (or 230386 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 2081211772 is about 45620.2999990136. The cubic root of 2081211772 is about 1276.7487007515.

The spelling of 2081211772 in words is "two billion, eighty-one million, two hundred eleven thousand, seven hundred seventy-two".