401121099 has 16 divisors (see below), whose sum is σ = 594669600. Its totient is φ = 267226848.

The previous prime is 401121089. The next prime is 401121101. The reversal of 401121099 is 990121104.

It is not a de Polignac number, because 401121099 - 2¹⁹ = 400596811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (401121029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41797 + ... + 50489.

It is an arithmetic number, because the mean of its divisors is an integer number (37166850).

Almost surely, 2^401121099 is an apocalyptic number.

401121099 is a deficient number, since it is larger than the sum of its proper divisors (193548501).

401121099 is a wasteful number, since it uses less digits than its factorization.

401121099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10411 (or 10405 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 401121099 is about 20028.0078639889. The cubic root of 401121099 is about 737.4940182987.

The spelling of 401121099 in words is "four hundred one million, one hundred twenty-one thousand, ninety-nine".