20000212020977 has 2 divisors, whose sum is σ = 20000212020978. Its totient is φ = 20000212020976.

The previous prime is 20000212020973. The next prime is 20000212021021. The reversal of 20000212020977 is 77902021200002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15720344782321 + 4279867238656 = 3964889^2 + 2068784^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000212020977 - 2² = 20000212020973 is a prime.

It is not a weakly prime, because it can be changed into another prime (20000212020973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000106010488 + 10000106010489.

It is an arithmetic number, because the mean of its divisors is an integer number (10000106010489).

Almost surely, 2^{20000212020977} is an apocalyptic number.

It is an amenable number.

20000212020977 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000212020977 is an equidigital number, since it uses as much as digits as its factorization.

20000212020977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

Adding to 20000212020977 its reverse (77902021200002), we get a palindrome (97902233220979).

The spelling of 20000212020977 in words is "twenty trillion, two hundred twelve million, twenty thousand, nine hundred seventy-seven".