121231000210 has 8 divisors (see below), whose sum is σ = 218215800396. Its totient is φ = 48492400080.

The previous prime is 121231000181. The next prime is 121231000223. The reversal of 121231000210 is 12000132121.

It can be written as a sum of positive squares in 2 ways, for example, as 101263331961 + 19967668249 = 318219^2 + 141307^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 6061550001 + ... + 6061550020.

Almost surely, 2^121231000210 is an apocalyptic number.

121231000210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121231000210 is a deficient number, since it is larger than the sum of its proper divisors (96984800186).

121231000210 is a wasteful number, since it uses less digits than its factorization.

121231000210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12123100028.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121231000210 its reverse (12000132121), we get a palindrome (133231132331).

The spelling of 121231000210 in words is "one hundred twenty-one billion, two hundred thirty-one million, two hundred ten", and thus it is an aban number.