1211011422131 has 12 divisors (see below), whose sum is σ = 1419481225800. Its totient is φ = 1030086046080.

The previous prime is 1211011422077. The next prime is 1211011422139. The reversal of 1211011422131 is 1312241101121.

It is a happy number.

It is not a de Polignac number, because 1211011422131 - 2¹⁰ = 1211011421107 is a prime.

It is a super-2 number, since 2×1211011422131² (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 (1211011422139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94323806 + ... + 94336643.

It is an arithmetic number, because the mean of its divisors is an integer number (118290102150).

Almost surely, 2^{1211011422131} is an apocalyptic number.

1211011422131 is a deficient number, since it is larger than the sum of its proper divisors (208469803669).

1211011422131 is a wasteful number, since it uses less digits than its factorization.

1211011422131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188660594 (or 188660587 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 1211011422131 its reverse (1312241101121), we get a palindrome (2523252523252).

The spelling of 1211011422131 in words is "one trillion, two hundred eleven billion, eleven million, four hundred twenty-two thousand, one hundred thirty-one".