2120210999987 has 2 divisors, whose sum is σ = 2120210999988. Its totient is φ = 2120210999986.

The previous prime is 2120210999947. The next prime is 2120211000007. The reversal of 2120210999987 is 7899990120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2120210999987 - 2⁶ = 2120210999923 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120210999947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060105499993 + 1060105499994.

It is an arithmetic number, because the mean of its divisors is an integer number (1060105499994).

Almost surely, 2^{2120210999987} is an apocalyptic number.

2120210999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120210999987 is an equidigital number, since it uses as much as digits as its factorization.

2120210999987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 59.

The spelling of 2120210999987 in words is "two trillion, one hundred twenty billion, two hundred ten million, nine hundred ninety-nine thousand, nine hundred eighty-seven".