1211012101296 has 80 divisors (see below), whose sum is σ = 3476218504800. Its totient is φ = 403651510272.

The previous prime is 1211012101183. The next prime is 1211012101297. The reversal of 1211012101296 is 6921012101121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1211012101297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11254920 + ... + 11362008.

It is an arithmetic number, because the mean of its divisors is an integer number (43452731310).

Almost surely, 2^{1211012101296} is an apocalyptic number.

1211012101296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1211012101296 is an abundant number, since it is smaller than the sum of its proper divisors (2265206403504).

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

1211012101296 is a wasteful number, since it uses less digits than its factorization.

1211012101296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133283 (or 133271 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 27.

The spelling of 1211012101296 in words is "one trillion, two hundred eleven billion, twelve million, one hundred one thousand, two hundred ninety-six".