20120023211 has 2 divisors, whose sum is σ = 20120023212. Its totient is φ = 20120023210.

The previous prime is 20120023201. The next prime is 20120023219. The reversal of 20120023211 is 11232002102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20120023211 - 2¹⁰ = 20120022187 is a prime.

It is a super-2 number, since 2×20120023211² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20120023219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060011605 + 10060011606.

It is an arithmetic number, because the mean of its divisors is an integer number (10060011606).

Almost surely, 2^20120023211 is an apocalyptic number.

20120023211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120023211 is an equidigital number, since it uses as much as digits as its factorization.

20120023211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20120023211 its reverse (11232002102), we get a palindrome (31352025313).

The spelling of 20120023211 in words is "twenty billion, one hundred twenty million, twenty-three thousand, two hundred eleven".