101421211220101 has 2 divisors, whose sum is σ = 101421211220102. Its totient is φ = 101421211220100.

The previous prime is 101421211220093. The next prime is 101421211220113. The reversal of 101421211220101 is 101022112124101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80990820260100 + 20430390960001 = 8999490^2 + 4519999^2 .

It is a cyclic number.

It is not a de Polignac number, because 101421211220101 - 2³ = 101421211220093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101421211220141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50710605610050 + 50710605610051.

It is an arithmetic number, because the mean of its divisors is an integer number (50710605610051).

Almost surely, 2^{101421211220101} is an apocalyptic number.

It is an amenable number.

101421211220101 is a deficient number, since it is larger than the sum of its proper divisors (1).

101421211220101 is an equidigital number, since it uses as much as digits as its factorization.

101421211220101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 101421211220101 its reverse (101022112124101), we get a palindrome (202443323344202).

The spelling of 101421211220101 in words is "one hundred one trillion, four hundred twenty-one billion, two hundred eleven million, two hundred twenty thousand, one hundred one".