1211313120000 has 180 divisors, whose sum is σ = 4028536299480. Its totient is φ = 323016704000.

The previous prime is 1211313119993. The next prime is 1211313120011. The reversal of 1211313120000 is 213131121.

It is a happy number.

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

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, 781785 + ... + 1741784.

Almost surely, 2^{1211313120000} is an apocalyptic number.

1211313120000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211313120000 is an abundant number, since it is smaller than the sum of its proper divisors (2817223179480).

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

1211313120000 is an frugal number, since it uses more digits than its factorization.

1211313120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523608 (or 2523579 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1211313120000 its reverse (213131121), we get a palindrome (1211526251121).

The spelling of 1211313120000 in words is "one trillion, two hundred eleven billion, three hundred thirteen million, one hundred twenty thousand".