121021121000210 has 16 divisors (see below), whose sum is σ = 217887832198296. Its totient is φ = 48397378533888.

The previous prime is 121021121000177. The next prime is 121021121000231. The reversal of 121021121000210 is 12000121120121.

It can be written as a sum of positive squares in 4 ways, for example, as 70781816455249 + 50239304544961 = 8413193^2 + 7087969^2 .

It is a super-2 number, since 2×121021121000210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1383687359 + ... + 1383774818.

Almost surely, 2^{121021121000210} is an apocalyptic number.

121021121000210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021121000210 is a deficient number, since it is larger than the sum of its proper divisors (96866711198086).

121021121000210 is a wasteful number, since it uses less digits than its factorization.

121021121000210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767466557.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121021121000210 its reverse (12000121120121), we get a palindrome (133021242120331).

The spelling of 121021121000210 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred twenty-one million, two hundred ten", and thus it is an aban number.