1000021212199 has 2 divisors, whose sum is σ = 1000021212200. Its totient is φ = 1000021212198.

The previous prime is 1000021212181. The next prime is 1000021212241. The reversal of 1000021212199 is 9912121200001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000021212199 - 2¹⁷ = 1000021081127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000021212119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500010606099 + 500010606100.

It is an arithmetic number, because the mean of its divisors is an integer number (500010606100).

Almost surely, 2^{1000021212199} is an apocalyptic number.

1000021212199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000021212199 is an equidigital number, since it uses as much as digits as its factorization.

1000021212199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 1000021212199 in words is "one trillion, twenty-one million, two hundred twelve thousand, one hundred ninety-nine".