1201408141021 has 12 divisors (see below), whose sum is σ = 1328967261916. Its totient is φ = 1085232582720.

The previous prime is 1201408141001. The next prime is 1201408141081. The reversal of 1201408141021 is 1201418041021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 891298375396 + 310109765625 = 944086^2 + 556875^2 .

It is not a de Polignac number, because 1201408141021 - 2¹⁵ = 1201408108253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201408141001) 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, 31602000 + ... + 31639993.

Almost surely, 2^{1201408141021} is an apocalyptic number.

1201408141021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201408141021 is a deficient number, since it is larger than the sum of its proper divisors (127559120895).

1201408141021 is a wasteful number, since it uses less digits than its factorization.

1201408141021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63242172 (or 63242161 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The spelling of 1201408141021 in words is "one trillion, two hundred one billion, four hundred eight million, one hundred forty-one thousand, twenty-one".