2211531142135 has 24 divisors (see below), whose sum is σ = 3093784739136. Its totient is φ = 1513203088320.

The previous prime is 2211531142123. The next prime is 2211531142151. The reversal of 2211531142135 is 5312411351122.

It is not a de Polignac number, because 2211531142135 - 2¹⁵ = 2211531109367 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211531142097 and 2211531142106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9634576 + ... + 9861445.

It is an arithmetic number, because the mean of its divisors is an integer number (128907697464).

Almost surely, 2^{2211531142135} is an apocalyptic number.

2211531142135 is a deficient number, since it is larger than the sum of its proper divisors (882253597001).

2211531142135 is a wasteful number, since it uses less digits than its factorization.

2211531142135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19496503 (or 19496496 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

Adding to 2211531142135 its reverse (5312411351122), we get a palindrome (7523942493257).

The spelling of 2211531142135 in words is "two trillion, two hundred eleven billion, five hundred thirty-one million, one hundred forty-two thousand, one hundred thirty-five".