1131212201025 has 24 divisors (see below), whose sum is σ = 1951586965440. Its totient is φ = 577082165440.

The previous prime is 1131212201023. The next prime is 1131212201069. The reversal of 1131212201025 is 5201022121311.

It is not a de Polignac number, because 1131212201025 - 2¹ = 1131212201023 is a prime.

It is a super-2 number, since 2×1131212201025² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131212200992 and 1131212201010.

It is not an unprimeable number, because it can be changed into a prime (1131212201023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 327885870 + ... + 327889319.

It is an arithmetic number, because the mean of its divisors is an integer number (81316123560).

Almost surely, 2^{1131212201025} is an apocalyptic number.

1131212201025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131212201025 is a deficient number, since it is larger than the sum of its proper divisors (820374764415).

1131212201025 is a wasteful number, since it uses less digits than its factorization.

1131212201025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655775225 (or 655775220 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 1131212201025 its reverse (5201022121311), we get a palindrome (6332234322336).

The spelling of 1131212201025 in words is "one trillion, one hundred thirty-one billion, two hundred twelve million, two hundred one thousand, twenty-five".