21020461134201 has 8 divisors (see below), whose sum is σ = 31141423902560. Its totient is φ = 14013640756116.

The previous prime is 21020461134143. The next prime is 21020461134227. The reversal of 21020461134201 is 10243116402012.

21020461134201 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 0 + 4 + 611 + 3 + 42 + 0 + 1 = 666.

It is not a de Polignac number, because 21020461134201 - 2¹⁹ = 21020460609913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 778535597563 = 21020461134201 / (2 + 1 + 0 + 2 + 0 + 4 + 6 + 1 + 1 + 3 + 4 + 2 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21020461134241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389267798755 + ... + 389267798808.

It is an arithmetic number, because the mean of its divisors is an integer number (3892677987820).

Almost surely, 2^{21020461134201} is an apocalyptic number.

It is an amenable number.

21020461134201 is a deficient number, since it is larger than the sum of its proper divisors (10120962768359).

21020461134201 is an equidigital number, since it uses as much as digits as its factorization.

21020461134201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778535597572 (or 778535597566 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 21020461134201 its reverse (10243116402012), we get a palindrome (31263577536213).

The spelling of 21020461134201 in words is "twenty-one trillion, twenty billion, four hundred sixty-one million, one hundred thirty-four thousand, two hundred one".