10212020219977 has 4 divisors (see below), whose sum is σ = 10216382469316. Its totient is φ = 10207657970640.

The previous prime is 10212020219959. The next prime is 10212020219981. The reversal of 10212020219977 is 77991202021201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8928974683321 + 1283045536656 = 2988139^2 + 1132716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10212020219977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10212020219957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2181121158 + ... + 2181125839.

It is an arithmetic number, because the mean of its divisors is an integer number (2554095617329).

Almost surely, 2^{10212020219977} is an apocalyptic number.

It is an amenable number.

10212020219977 is a deficient number, since it is larger than the sum of its proper divisors (4362249339).

10212020219977 is an equidigital number, since it uses as much as digits as its factorization.

10212020219977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362249338.

The product of its (nonzero) digits is 63504, while the sum is 43.

The spelling of 10212020219977 in words is "ten trillion, two hundred twelve billion, twenty million, two hundred nineteen thousand, nine hundred seventy-seven".