100020001221992 has 16 divisors (see below), whose sum is σ = 195691306739040. Its totient is φ = 47835652758256.

The previous prime is 100020001221859. The next prime is 100020001222111. The reversal of 100020001221992 is 299122100020001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271793481398 + ... + 271793481765.

It is an arithmetic number, because the mean of its divisors is an integer number (12230706671190).

Almost surely, 2^{100020001221992} is an apocalyptic number.

It is an amenable number.

100020001221992 is a deficient number, since it is larger than the sum of its proper divisors (95671305517048).

100020001221992 is a wasteful number, since it uses less digits than its factorization.

100020001221992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543586963192 (or 543586963188 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

Adding to 100020001221992 its reverse (299122100020001), we get a palindrome (399142101241993).

The spelling of 100020001221992 in words is "one hundred trillion, twenty billion, one million, two hundred twenty-one thousand, nine hundred ninety-two".