20120222311 has 16 divisors (see below), whose sum is σ = 24496416000. Its totient is φ = 16141370688.

The previous prime is 20120222263. The next prime is 20120222329. The reversal of 20120222311 is 11322202102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20120222311 - 2⁷ = 20120222183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120222351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900286 + ... + 922363.

It is an arithmetic number, because the mean of its divisors is an integer number (1531026000).

Almost surely, 2^20120222311 is an apocalyptic number.

20120222311 is a deficient number, since it is larger than the sum of its proper divisors (4376193689).

20120222311 is a wasteful number, since it uses less digits than its factorization.

20120222311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822758.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20120222311 its reverse (11322202102), we get a palindrome (31442424413).

The spelling of 20120222311 in words is "twenty billion, one hundred twenty million, two hundred twenty-two thousand, three hundred eleven".