1211012101201 has 16 divisors (see below), whose sum is σ = 1467572079744. Its totient is φ = 975520491264.

The previous prime is 1211012101183. The next prime is 1211012101297. The reversal of 1211012101201 is 1021012101121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1211012101201 - 2⁷ = 1211012101073 is a prime.

It is a super-2 number, since 2×1211012101201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211012101801) 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, 7368630 + ... + 7531183.

It is an arithmetic number, because the mean of its divisors is an integer number (91723254984).

Almost surely, 2^{1211012101201} is an apocalyptic number.

It is an amenable number.

1211012101201 is a deficient number, since it is larger than the sum of its proper divisors (256559978543).

1211012101201 is a wasteful number, since it uses less digits than its factorization.

1211012101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14900520.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1211012101201 its reverse (1021012101121), we get a palindrome (2232024202322).

The spelling of 1211012101201 in words is "one trillion, two hundred eleven billion, twelve million, one hundred one thousand, two hundred one".