121121020001210 has 16 divisors (see below), whose sum is σ = 218021489028000. Its totient is φ = 48447596216976.

The previous prime is 121121020001209. The next prime is 121121020001231. The reversal of 121121020001210 is 12100020121121.

It is a super-2 number, since 2×121121020001210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100846100 + ... + 102040079.

It is an arithmetic number, because the mean of its divisors is an integer number (13626343064250).

Almost surely, 2^{121121020001210} is an apocalyptic number.

121121020001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121121020001210 is a deficient number, since it is larger than the sum of its proper divisors (96900469026790).

121121020001210 is a wasteful number, since it uses less digits than its factorization.

121121020001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202945885.

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

Adding to 121121020001210 its reverse (12100020121121), we get a palindrome (133221040122331).

The spelling of 121121020001210 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, twenty million, one thousand, two hundred ten".