121121000122210 has 48 divisors (see below), whose sum is σ = 239641252716600. Its totient is φ = 44043659573760.

The previous prime is 121121000122193. The next prime is 121121000122289. The reversal of 121121000122210 is 12221000121121.

It can be written as a sum of positive squares in 4 ways, for example, as 87220413820969 + 33900586301241 = 9339187^2 + 5822421^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198388096 + ... + 198997684.

Almost surely, 2^{121121000122210} is an apocalyptic number.

121121000122210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121121000122210 is a deficient number, since it is larger than the sum of its proper divisors (118520252594390).

121121000122210 is a wasteful number, since it uses less digits than its factorization.

121121000122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773827 (or 773816 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121121000122210 its reverse (12221000121121), we get a palindrome (133342000243331).

The spelling of 121121000122210 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred twenty-two thousand, two hundred ten".