20121011201 has 2 divisors, whose sum is σ = 20121011202. Its totient is φ = 20121011200.

The previous prime is 20121011177. The next prime is 20121011221. The reversal of 20121011201 is 10211012102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15016051600 + 5104959601 = 122540^2 + 71449^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121011201 - 2⁶ = 20121011137 is a prime.

It is not a weakly prime, because it can be changed into another prime (20121011221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060505600 + 10060505601.

It is an arithmetic number, because the mean of its divisors is an integer number (10060505601).

Almost surely, 2^20121011201 is an apocalyptic number.

It is an amenable number.

20121011201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121011201 is an equidigital number, since it uses as much as digits as its factorization.

20121011201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20121011201 its reverse (10211012102), we get a palindrome (30332023303).

Subtracting from 20121011201 its reverse (10211012102), we obtain a palindrome (9909999099).

The spelling of 20121011201 in words is "twenty billion, one hundred twenty-one million, eleven thousand, two hundred one".