20120220102001 has 2 divisors, whose sum is σ = 20120220102002. Its totient is φ = 20120220102000.

The previous prime is 20120220101957. The next prime is 20120220102011. The reversal of 20120220102001 is 10020102202102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14564412832225 + 5555807269776 = 3816335^2 + 2357076^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120220102001 - 2⁹ = 20120220101489 is a prime.

It is not a weakly prime, because it can be changed into another prime (20120220102011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060110051000 + 10060110051001.

It is an arithmetic number, because the mean of its divisors is an integer number (10060110051001).

Almost surely, 2^{20120220102001} is an apocalyptic number.

It is an amenable number.

20120220102001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120220102001 is an equidigital number, since it uses as much as digits as its factorization.

20120220102001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20120220102001 its reverse (10020102202102), we get a palindrome (30140322304103).

It can be divided in two parts, 201 and 20220102001, that added together give a palindrome (20220102202).

The spelling of 20120220102001 in words is "twenty trillion, one hundred twenty billion, two hundred twenty million, one hundred two thousand, one".