1201402041021 has 48 divisors (see below), whose sum is σ = 2193550929024. Its totient is φ = 616579350912.

The previous prime is 1201402040987. The next prime is 1201402041031.

1201402041021 is a `hidden beast` number, since 1 + 201 + 402 + 0 + 41 + 0 + 21 = 666.

1201402041021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1201402041021 - 2⁷ = 1201402040893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201402040985 and 1201402041003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201402041031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19792851 + ... + 19853456.

It is an arithmetic number, because the mean of its divisors is an integer number (45698977688).

Almost surely, 2^{1201402041021} is an apocalyptic number.

It is an amenable number.

1201402041021 is a deficient number, since it is larger than the sum of its proper divisors (992148888003).

1201402041021 is a wasteful number, since it uses less digits than its factorization.

1201402041021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39646370 (or 39646367 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The spelling of 1201402041021 in words is "one trillion, two hundred one billion, four hundred two million, forty-one thousand, twenty-one".