102211212204 has 96 divisors (see below), whose sum is σ = 279845475840. Its totient is φ = 32196377664.

The previous prime is 102211212203. The next prime is 102211212209. The reversal of 102211212204 is 402212112201.

It is a super-2 number, since 2×102211212204² (a number of 23 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (102211212203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41707 + ... + 454050.

It is an arithmetic number, because the mean of its divisors is an integer number (2915057040).

Almost surely, 2^102211212204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102211212204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139922737920).

102211212204 is an abundant number, since it is smaller than the sum of its proper divisors (177634263636).

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

102211212204 is a wasteful number, since it uses less digits than its factorization.

102211212204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495876 (or 495868 counting only the distinct ones).

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

Adding to 102211212204 its reverse (402212112201), we get a palindrome (504423324405).

The spelling of 102211212204 in words is "one hundred two billion, two hundred eleven million, two hundred twelve thousand, two hundred four".