402202011421 has 32 divisors (see below), whose sum is σ = 477447540480. Its totient is φ = 331627862016.

The previous prime is 402202011413. The next prime is 402202011451. The reversal of 402202011421 is 124110202204.

It is a cyclic number.

It is not a de Polignac number, because 402202011421 - 2³ = 402202011413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402202011401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14091661 + ... + 14120173.

It is an arithmetic number, because the mean of its divisors is an integer number (14920235640).

Almost surely, 2^402202011421 is an apocalyptic number.

It is an amenable number.

402202011421 is a deficient number, since it is larger than the sum of its proper divisors (75245529059).

402202011421 is a wasteful number, since it uses less digits than its factorization.

402202011421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29173.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 402202011421 its reverse (124110202204), we get a palindrome (526312213625).

The spelling of 402202011421 in words is "four hundred two billion, two hundred two million, eleven thousand, four hundred twenty-one".