399900102121222 has 4 divisors (see below), whose sum is σ = 599850153181836. Its totient is φ = 199950051060610.

The previous prime is 399900102121211. The next prime is 399900102121231. The reversal of 399900102121222 is 222121201009993.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99975025530304 + ... + 99975025530307.

It is an arithmetic number, because the mean of its divisors is an integer number (149962538295459).

Almost surely, 2^{399900102121222} is an apocalyptic number.

399900102121222 is a deficient number, since it is larger than the sum of its proper divisors (199950051060614).

399900102121222 is a wasteful number, since it uses less digits than its factorization.

399900102121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199950051060613.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 399900102121222 in words is "three hundred ninety-nine trillion, nine hundred billion, one hundred two million, one hundred twenty-one thousand, two hundred twenty-two".