401211342121 has 2 divisors, whose sum is σ = 401211342122. Its totient is φ = 401211342120.

The previous prime is 401211342107. The next prime is 401211342157. The reversal of 401211342121 is 121243112104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381385294096 + 19826048025 = 617564^2 + 140805^2 .

It is a cyclic number.

It is not a de Polignac number, because 401211342121 - 2³⁵ = 366851603753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 401211342092 and 401211342101.

It is not a weakly prime, because it can be changed into another prime (401211346121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200605671060 + 200605671061.

It is an arithmetic number, because the mean of its divisors is an integer number (200605671061).

Almost surely, 2^401211342121 is an apocalyptic number.

It is an amenable number.

401211342121 is a deficient number, since it is larger than the sum of its proper divisors (1).

401211342121 is an equidigital number, since it uses as much as digits as its factorization.

401211342121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 401211342121 its reverse (121243112104), we get a palindrome (522454454225).

The spelling of 401211342121 in words is "four hundred one billion, two hundred eleven million, three hundred forty-two thousand, one hundred twenty-one".