1213120213011 has 48 divisors (see below), whose sum is σ = 2050242754560. Its totient is φ = 676740355200.

The previous prime is 1213120212979. The next prime is 1213120213031. The reversal of 1213120213011 is 1103120213121.

It is not a de Polignac number, because 1213120213011 - 2⁵ = 1213120212979 is a prime.

It is a super-2 number, since 2×1213120213011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1213120213031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5170495 + ... + 5400023.

It is an arithmetic number, because the mean of its divisors is an integer number (42713390720).

Almost surely, 2^{1213120213011} is an apocalyptic number.

1213120213011 is a deficient number, since it is larger than the sum of its proper divisors (837122541549).

1213120213011 is a wasteful number, since it uses less digits than its factorization.

1213120213011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231536 (or 231533 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1213120213011 its reverse (1103120213121), we get a palindrome (2316240426132).

The spelling of 1213120213011 in words is "one trillion, two hundred thirteen billion, one hundred twenty million, two hundred thirteen thousand, eleven".