1213100525276 has 12 divisors (see below), whose sum is σ = 2247803914608. Its totient is φ = 570870835392.

The previous prime is 1213100525251. The next prime is 1213100525303. The reversal of 1213100525276 is 6725250013121.

It is a super-2 number, since 2×1213100525276² (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 3 ways as a sum of consecutive naturals, for example, 8919856736 + ... + 8919856871.

It is an arithmetic number, because the mean of its divisors is an integer number (187316992884).

Almost surely, 2^{1213100525276} is an apocalyptic number.

It is an amenable number.

1213100525276 is a deficient number, since it is larger than the sum of its proper divisors (1034703389332).

1213100525276 is a wasteful number, since it uses less digits than its factorization.

1213100525276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17839713628 (or 17839713626 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

Adding to 1213100525276 its reverse (6725250013121), we get a palindrome (7938350538397).

The spelling of 1213100525276 in words is "one trillion, two hundred thirteen billion, one hundred million, five hundred twenty-five thousand, two hundred seventy-six".