100121121332 has 6 divisors (see below), whose sum is σ = 175211962338. Its totient is φ = 50060560664.

The previous prime is 100121121307. The next prime is 100121121371. The reversal of 100121121332 is 233121121001.

It can be written as a sum of positive squares in only one way, i.e., 78783507856 + 21337613476 = 280684^2 + 146074^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 100121121332.

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, 12515140163 + ... + 12515140170.

It is an arithmetic number, because the mean of its divisors is an integer number (29201993723).

Almost surely, 2^100121121332 is an apocalyptic number.

It is an amenable number.

100121121332 is a deficient number, since it is larger than the sum of its proper divisors (75090841006).

100121121332 is a wasteful number, since it uses less digits than its factorization.

100121121332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25030280337 (or 25030280335 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 100121121332 its reverse (233121121001), we get a palindrome (333242242333).

The spelling of 100121121332 in words is "one hundred billion, one hundred twenty-one million, one hundred twenty-one thousand, three hundred thirty-two".