1020212121199 has 4 divisors (see below), whose sum is σ = 1020214219464. Its totient is φ = 1020210022936.

The previous prime is 1020212121167. The next prime is 1020212121221. The reversal of 1020212121199 is 9911212120201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020212121199 - 2⁵ = 1020212121167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020212121199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020212122199) 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, 99069 + ... + 1431865.

It is an arithmetic number, because the mean of its divisors is an integer number (255053554866).

Almost surely, 2^{1020212121199} is an apocalyptic number.

1020212121199 is a deficient number, since it is larger than the sum of its proper divisors (2098265).

1020212121199 is an equidigital number, since it uses as much as digits as its factorization.

1020212121199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098264.

The product of its (nonzero) digits is 1296, while the sum is 31.

It can be divided in two parts, 1020212 and 121199, that added together give a palindrome (1141411).

The spelling of 1020212121199 in words is "one trillion, twenty billion, two hundred twelve million, one hundred twenty-one thousand, one hundred ninety-nine".