1402221121 has 8 divisors (see below), whose sum is σ = 1603623744. Its totient is φ = 1201089840.

The previous prime is 1402221113. The next prime is 1402221127. The reversal of 1402221121 is 1211222041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1402221121 - 2³ = 1402221113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1402221095 and 1402221104.

It is not an unprimeable number, because it can be changed into a prime (1402221127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56635 + ... + 77536.

It is an arithmetic number, because the mean of its divisors is an integer number (200452968).

Almost surely, 2^1402221121 is an apocalyptic number.

It is an amenable number.

1402221121 is a deficient number, since it is larger than the sum of its proper divisors (201402623).

1402221121 is a wasteful number, since it uses less digits than its factorization.

1402221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135671.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1402221121 is about 37446.2430825844. The cubic root of 1402221121 is about 1119.2802350888.

Adding to 1402221121 its reverse (1211222041), we get a palindrome (2613443162).

The spelling of 1402221121 in words is "one billion, four hundred two million, two hundred twenty-one thousand, one hundred twenty-one".