2021199963547 has 2 divisors, whose sum is σ = 2021199963548. Its totient is φ = 2021199963546.

The previous prime is 2021199963529. The next prime is 2021199963577. The reversal of 2021199963547 is 7453699911202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021199963547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021199963491 and 2021199963500.

It is not a weakly prime, because it can be changed into another prime (2021199963577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010599981773 + 1010599981774.

It is an arithmetic number, because the mean of its divisors is an integer number (1010599981774).

Almost surely, 2^{2021199963547} is an apocalyptic number.

2021199963547 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021199963547 is an equidigital number, since it uses as much as digits as its factorization.

2021199963547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7348320, while the sum is 58.

The spelling of 2021199963547 in words is "two trillion, twenty-one billion, one hundred ninety-nine million, nine hundred sixty-three thousand, five hundred forty-seven".