11020111012131 has 32 divisors (see below), whose sum is σ = 17483016983040. Its totient is φ = 6105180516864.

The previous prime is 11020111012109. The next prime is 11020111012171. The reversal of 11020111012131 is 13121011102011.

It is not a de Polignac number, because 11020111012131 - 2⁴² = 6622064501027 is a prime.

It is a super-2 number, since 2×11020111012131² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11020111012131.

It is not an unprimeable number, because it can be changed into a prime (11020111012171) 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 31 ways as a sum of consecutive naturals, for example, 361323561 + ... + 361354058.

It is an arithmetic number, because the mean of its divisors is an integer number (546344280720).

Almost surely, 2^{11020111012131} is an apocalyptic number.

11020111012131 is a deficient number, since it is larger than the sum of its proper divisors (6462905970909).

11020111012131 is a wasteful number, since it uses less digits than its factorization.

11020111012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722677675.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 11020111012131 its reverse (13121011102011), we get a palindrome (24141122114142).

The spelling of 11020111012131 in words is "eleven trillion, twenty billion, one hundred eleven million, twelve thousand, one hundred thirty-one".