2131022221111 has 32 divisors (see below), whose sum is σ = 2593488128000. Its totient is φ = 1710381526272.

The previous prime is 2131022221109. The next prime is 2131022221129. The reversal of 2131022221111 is 1111222201312.

It is a cyclic number.

It is not a de Polignac number, because 2131022221111 - 2¹ = 2131022221109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131022221711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5749570 + ... + 6108976.

It is an arithmetic number, because the mean of its divisors is an integer number (81046504000).

Almost surely, 2^{2131022221111} is an apocalyptic number.

2131022221111 is a deficient number, since it is larger than the sum of its proper divisors (462465906889).

2131022221111 is a wasteful number, since it uses less digits than its factorization.

2131022221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359951.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 2131022221111 its reverse (1111222201312), we get a palindrome (3242244422423).

The spelling of 2131022221111 in words is "two trillion, one hundred thirty-one billion, twenty-two million, two hundred twenty-one thousand, one hundred eleven".