1222212210000 has 100 divisors (see below), whose sum is σ = 3945464072352. Its totient is φ = 325923248000.

The previous prime is 1222212209989. The next prime is 1222212210047. The reversal of 1222212210000 is 122122221.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20340204 + ... + 20400203.

Almost surely, 2^{1222212210000} is an apocalyptic number.

1222212210000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222212210000 is an abundant number, since it is smaller than the sum of its proper divisors (2723251862352).

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

1222212210000 is an equidigital number, since it uses as much as digits as its factorization.

1222212210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40740438 (or 40740417 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1222212210000 its reverse (122122221), we get a palindrome (1222334332221).

The spelling of 1222212210000 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, two hundred ten thousand".