200102121019 has 4 divisors (see below), whose sum is σ = 202083330240. Its totient is φ = 198120911800.

The previous prime is 200102120993. The next prime is 200102121059. The reversal of 200102121019 is 910121201002.

It is a happy number.

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 200102121019 - 2⁷ = 200102120891 is a prime.

It is a super-2 number, since 2×200102121019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200102120987 and 200102121005.

It is not an unprimeable number, because it can be changed into a prime (200102121059) 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, 990604459 + ... + 990604660.

It is an arithmetic number, because the mean of its divisors is an integer number (50520832560).

Almost surely, 2^200102121019 is an apocalyptic number.

200102121019 is a deficient number, since it is larger than the sum of its proper divisors (1981209221).

200102121019 is a wasteful number, since it uses less digits than its factorization.

200102121019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981209220.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 200102121019 in words is "two hundred billion, one hundred two million, one hundred twenty-one thousand, nineteen".