611221220104 has 32 divisors (see below), whose sum is σ = 1250461670400. Its totient is φ = 277775283520.

The previous prime is 611221220101. The next prime is 611221220131. The reversal of 611221220104 is 401022122116.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (611221220101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186952 + ... + 1121335.

It is an arithmetic number, because the mean of its divisors is an integer number (39076927200).

Almost surely, 2^611221220104 is an apocalyptic number.

It is an amenable number.

611221220104 is an abundant number, since it is smaller than the sum of its proper divisors (639240450296).

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

611221220104 is a wasteful number, since it uses less digits than its factorization.

611221220104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313613 (or 1313609 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

It can be divided in two parts, 6112212 and 20104, that added together give a palindrome (6132316).

The spelling of 611221220104 in words is "six hundred eleven billion, two hundred twenty-one million, two hundred twenty thousand, one hundred four".