1211314951220 has 96 divisors (see below), whose sum is σ = 2938599699840. Its totient is φ = 414518128640.

The previous prime is 1211314951219. The next prime is 1211314951241. The reversal of 1211314951220 is 221594131121.

It is a super-2 number, since 2×1211314951220² (a number of 25 digits) contains 22 as substring.

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, 45715736 + ... + 45742224.

It is an arithmetic number, because the mean of its divisors is an integer number (30610413540).

Almost surely, 2^{1211314951220} is an apocalyptic number.

1211314951220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211314951220 is an abundant number, since it is smaller than the sum of its proper divisors (1727284748620).

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

1211314951220 is a wasteful number, since it uses less digits than its factorization.

1211314951220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38753 (or 38751 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 1211314951220 in words is "one trillion, two hundred eleven billion, three hundred fourteen million, nine hundred fifty-one thousand, two hundred twenty".