1402011321021 has 20 divisors (see below), whose sum is σ = 2094402733500. Its totient is φ = 934656299136.

The previous prime is 1402011321019. The next prime is 1402011321071. The reversal of 1402011321021 is 1201231102041.

1402011321021 is a `hidden beast` number, since 140 + 201 + 1 + 321 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 713129580900 + 688881740121 = 844470^2 + 829989^2 .

It is not a de Polignac number, because 1402011321021 - 2¹ = 1402011321019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1402011320985 and 1402011321003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402011321071) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5119315 + ... + 5386223.

It is an arithmetic number, because the mean of its divisors is an integer number (104720136675).

Almost surely, 2^{1402011321021} is an apocalyptic number.

It is an amenable number.

1402011321021 is a deficient number, since it is larger than the sum of its proper divisors (692391412479).

1402011321021 is an equidigital number, since it uses as much as digits as its factorization.

1402011321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331770 (or 331761 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1402011321021 its reverse (1201231102041), we get a palindrome (2603242423062).

The spelling of 1402011321021 in words is "one trillion, four hundred two billion, eleven million, three hundred twenty-one thousand, twenty-one".