999100021122002 has 4 divisors (see below), whose sum is σ = 1498650031683006. Its totient is φ = 499550010561000.

The previous prime is 999100021121957. The next prime is 999100021122017. The reversal of 999100021122002 is 200221120001999.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 752272638352921 + 246827382769081 = 27427589^2 + 15710741^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249775005280499 + ... + 249775005280502.

Almost surely, 2^{999100021122002} is an apocalyptic number.

999100021122002 is a deficient number, since it is larger than the sum of its proper divisors (499550010561004).

999100021122002 is a wasteful number, since it uses less digits than its factorization.

999100021122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499550010561003.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 999100021122002 in words is "nine hundred ninety-nine trillion, one hundred billion, twenty-one million, one hundred twenty-two thousand, two".