14021225121 has 16 divisors (see below), whose sum is σ = 18974222784. Its totient is φ = 9208168704.

The previous prime is 14021225117. The next prime is 14021225131. The reversal of 14021225121 is 12152212041.

It is not a de Polignac number, because 14021225121 - 2² = 14021225117 is a prime.

It is a super-2 number, since 2×14021225121² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14021225131) 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, 142405 + ... + 219821.

It is an arithmetic number, because the mean of its divisors is an integer number (1185888924).

Almost surely, 2^14021225121 is an apocalyptic number.

It is an amenable number.

14021225121 is a deficient number, since it is larger than the sum of its proper divisors (4952997663).

14021225121 is an equidigital number, since it uses as much as digits as its factorization.

14021225121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78320.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 14021225121 its reverse (12152212041), we get a palindrome (26173437162).

The spelling of 14021225121 in words is "fourteen billion, twenty-one million, two hundred twenty-five thousand, one hundred twenty-one".