1213201122000 has 160 divisors (see below), whose sum is σ = 4470126345984. Its totient is φ = 277303104000.

The previous prime is 1213201121893. The next prime is 1213201122013. The reversal of 1213201122000 is 2211023121.

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 31 ways as a sum of consecutive naturals, for example, 14400871 + ... + 14484870.

Almost surely, 2^{1213201122000} is an apocalyptic number.

1213201122000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213201122000 is an abundant number, since it is smaller than the sum of its proper divisors (3256925223984).

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

1213201122000 is a wasteful number, since it uses less digits than its factorization.

1213201122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28885774 (or 28885758 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1213201122000 its reverse (2211023121), we get a palindrome (1215412145121).

The spelling of 1213201122000 in words is "one trillion, two hundred thirteen billion, two hundred one million, one hundred twenty-two thousand".