401421012101 has 2 divisors, whose sum is σ = 401421012102. Its totient is φ = 401421012100.

The previous prime is 401421012067. The next prime is 401421012103. The reversal of 401421012101 is 101210124104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388097850625 + 13323161476 = 622975^2 + 115426^2 .

It is a cyclic number.

It is not a de Polignac number, because 401421012101 - 2²² = 401416817797 is a prime.

It is a super-2 number, since 2×401421012101² (a number of 24 digits) contains 22 as substring.

Together with 401421012103, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 401421012101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401421012103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200710506050 + 200710506051.

It is an arithmetic number, because the mean of its divisors is an integer number (200710506051).

Almost surely, 2^401421012101 is an apocalyptic number.

It is an amenable number.

401421012101 is a deficient number, since it is larger than the sum of its proper divisors (1).

401421012101 is an equidigital number, since it uses as much as digits as its factorization.

401421012101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 401421012101 its reverse (101210124104), we get a palindrome (502631136205).

The spelling of 401421012101 in words is "four hundred one billion, four hundred twenty-one million, twelve thousand, one hundred one".