1401020455021 has 32 divisors (see below), whose sum is σ = 1632214425600. Its totient is φ = 1189736856000.

The previous prime is 1401020455019. The next prime is 1401020455027. The reversal of 1401020455021 is 1205540201041.

It is not a de Polignac number, because 1401020455021 - 2¹ = 1401020455019 is a prime.

It is a super-2 number, since 2×1401020455021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401020455027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121284196 + ... + 121295746.

It is an arithmetic number, because the mean of its divisors is an integer number (51006700800).

Almost surely, 2^{1401020455021} is an apocalyptic number.

1401020455021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1401020455021 is a deficient number, since it is larger than the sum of its proper divisors (231193970579).

1401020455021 is a wasteful number, since it uses less digits than its factorization.

1401020455021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22777.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 1401020455021 its reverse (1205540201041), we get a palindrome (2606560656062).

The spelling of 1401020455021 in words is "one trillion, four hundred one billion, twenty million, four hundred fifty-five thousand, twenty-one".