121011101210 has 16 divisors (see below), whose sum is σ = 224846433792. Its totient is φ = 46843006800.

The previous prime is 121011101177. The next prime is 121011101273. The reversal of 121011101210 is 12101110121.

It is a junction number, because it is equal to n+sod(n) for n = 121011101191 and 121011101200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195178886 + ... + 195179505.

It is an arithmetic number, because the mean of its divisors is an integer number (14052902112).

Almost surely, 2^121011101210 is an apocalyptic number.

121011101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121011101210 is a deficient number, since it is larger than the sum of its proper divisors (103835332582).

121011101210 is a wasteful number, since it uses less digits than its factorization.

121011101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390358429.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121011101210 its reverse (12101110121), we get a palindrome (133112211331).

The spelling of 121011101210 in words is "one hundred twenty-one billion, eleven million, one hundred one thousand, two hundred ten".