101220202020101 has 2 divisors, whose sum is σ = 101220202020102. Its totient is φ = 101220202020100.

The previous prime is 101220202020097. The next prime is 101220202020173. The reversal of 101220202020101 is 101020202022101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90492127180225 + 10728074839876 = 9512735^2 + 3275374^2 .

It is a cyclic number.

It is not a de Polignac number, because 101220202020101 - 2² = 101220202020097 is a prime.

It is a super-2 number, since 2×101220202020101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101220202040101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610101010050 + 50610101010051.

It is an arithmetic number, because the mean of its divisors is an integer number (50610101010051).

Almost surely, 2^{101220202020101} is an apocalyptic number.

It is an amenable number.

101220202020101 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220202020101 is an equidigital number, since it uses as much as digits as its factorization.

101220202020101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 101220202020101 its reverse (101020202022101), we get a palindrome (202240404042202).

The spelling of 101220202020101 in words is "one hundred one trillion, two hundred twenty billion, two hundred two million, twenty thousand, one hundred one".