1400123236221 has 12 divisors (see below), whose sum is σ = 2040297578748. Its totient is φ = 925155176064.

The previous prime is 1400123236219. The next prime is 1400123236241. The reversal of 1400123236221 is 1226323210041.

1400123236221 is a `hidden beast` number, since 1 + 4 + 0 + 0 + 1 + 2 + 32 + 3 + 622 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 314848920996 + 1085274315225 = 561114^2 + 1041765^2 .

It is not a de Polignac number, because 1400123236221 - 2¹ = 1400123236219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400123236201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 688358490 + ... + 688360523.

It is an arithmetic number, because the mean of its divisors is an integer number (170024798229).

Almost surely, 2^{1400123236221} is an apocalyptic number.

It is an amenable number.

1400123236221 is a deficient number, since it is larger than the sum of its proper divisors (640174342527).

1400123236221 is a wasteful number, since it uses less digits than its factorization.

1400123236221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376719132 (or 1376719129 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 1400123236221 its reverse (1226323210041), we get a palindrome (2626446446262).

The spelling of 1400123236221 in words is "one trillion, four hundred billion, one hundred twenty-three million, two hundred thirty-six thousand, two hundred twenty-one".