1401214443021 has 10 divisors (see below), whose sum is σ = 2093172192782. Its totient is φ = 934142961960.

The previous prime is 1401214443007. The next prime is 1401214443029. The reversal of 1401214443021 is 1203444121041.

1401214443021 is a `hidden beast` number, since 1 + 4 + 0 + 1 + 214 + 443 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 918204732900 + 483009710121 = 958230^2 + 694989^2 .

It is not a de Polignac number, because 1401214443021 - 2³⁷ = 1263775489549 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401214443029) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8649471790 + ... + 8649471951.

Almost surely, 2^{1401214443021} is an apocalyptic number.

It is an amenable number.

1401214443021 is a deficient number, since it is larger than the sum of its proper divisors (691957749761).

1401214443021 is an equidigital number, since it uses as much as digits as its factorization.

1401214443021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17298943753 (or 17298943744 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 1401214443021 its reverse (1203444121041), we get a palindrome (2604658564062).

The spelling of 1401214443021 in words is "one trillion, four hundred one billion, two hundred fourteen million, four hundred forty-three thousand, twenty-one".