121101010021210 has 128 divisors (see below), whose sum is σ = 230992888541184. Its totient is φ = 45620279147520.

The previous prime is 121101010021031. The next prime is 121101010021259. The reversal of 121101010021210 is 12120010101121.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7582548525 + ... + 7582564495.

It is an arithmetic number, because the mean of its divisors is an integer number (1804631941728).

Almost surely, 2^{121101010021210} is an apocalyptic number.

121101010021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121101010021210 is a deficient number, since it is larger than the sum of its proper divisors (109891878519974).

121101010021210 is a wasteful number, since it uses less digits than its factorization.

121101010021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18028.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121101010021210 its reverse (12120010101121), we get a palindrome (133221020122331).

The spelling of 121101010021210 in words is "one hundred twenty-one trillion, one hundred one billion, ten million, twenty-one thousand, two hundred ten".