401320222121 has 24 divisors (see below), whose sum is σ = 511552152384. Its totient is φ = 306578784960.

The previous prime is 401320222109. The next prime is 401320222279. The reversal of 401320222121 is 121222023104.

It is not a de Polignac number, because 401320222121 - 2²² = 401316027817 is a prime.

It is a super-2 number, since 2×401320222121² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401320222093 and 401320222102.

It is not an unprimeable number, because it can be changed into a prime (401320222421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2545415 + ... + 2698476.

It is an arithmetic number, because the mean of its divisors is an integer number (21314673016).

Almost surely, 2^401320222121 is an apocalyptic number.

It is an amenable number.

401320222121 is a deficient number, since it is larger than the sum of its proper divisors (110231930263).

401320222121 is a wasteful number, since it uses less digits than its factorization.

401320222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5243969 (or 5243940 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 401320222121 its reverse (121222023104), we get a palindrome (522542245225).

The spelling of 401320222121 in words is "four hundred one billion, three hundred twenty million, two hundred twenty-two thousand, one hundred twenty-one".