1400125221 has 48 divisors (see below), whose sum is σ = 2257295040. Its totient is φ = 829071360.

The previous prime is 1400125217. The next prime is 1400125241. The reversal of 1400125221 is 1225210041.

1400125221 is a `hidden beast` number, since 140 + 0 + 1 + 2 + 522 + 1 = 666.

It is not a de Polignac number, because 1400125221 - 2² = 1400125217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1400125194 and 1400125203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400125241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1820325 + ... + 1821093.

It is an arithmetic number, because the mean of its divisors is an integer number (47026980).

Almost surely, 2^1400125221 is an apocalyptic number.

1400125221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1400125221 is a deficient number, since it is larger than the sum of its proper divisors (857169819).

1400125221 is a wasteful number, since it uses less digits than its factorization.

1400125221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1183 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1400125221 is about 37418.2471663225. The cubic root of 1400125221 is about 1118.7222942651.

Adding to 1400125221 its reverse (1225210041), we get a palindrome (2625335262).

It can be divided in two parts, 1400 and 125221, that added together give a palindrome (126621).

The spelling of 1400125221 in words is "one billion, four hundred million, one hundred twenty-five thousand, two hundred twenty-one".