61811202222 has 120 divisors (see below), whose sum is σ = 173987473968. Its totient is φ = 16054822080.

The previous prime is 61811202169. The next prime is 61811202227. The reversal of 61811202222 is 22220211816.

61811202222 is a `hidden beast` number, since 618 + 1 + 1 + 2 + 0 + 22 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61811202227) by changing a digit.

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 59 ways as a sum of consecutive naturals, for example, 88023 + ... + 362450.

Almost surely, 2^61811202222 is an apocalyptic number.

61811202222 is an abundant number, since it is smaller than the sum of its proper divisors (112176271746).

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

61811202222 is a wasteful number, since it uses less digits than its factorization.

61811202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450516 (or 450496 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The spelling of 61811202222 in words is "sixty-one billion, eight hundred eleven million, two hundred two thousand, two hundred twenty-two".