121101220121210 has 16 divisors (see below), whose sum is σ = 249122509963776. Its totient is φ = 41520418327248.

The previous prime is 121101220121209. The next prime is 121101220121239. The reversal of 121101220121210 is 12121022101121.

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, 865008715082 + ... + 865008715221.

It is an arithmetic number, because the mean of its divisors is an integer number (15570156872736).

Almost surely, 2^{121101220121210} is an apocalyptic number.

121101220121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121101220121210 is an abundant number, since it is smaller than the sum of its proper divisors (128021289842566).

121101220121210 is a wasteful number, since it uses less digits than its factorization.

121101220121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730017430317.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121101220121210 its reverse (12121022101121), we get a palindrome (133222242222331).

The spelling of 121101220121210 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred twenty million, one hundred twenty-one thousand, two hundred ten".