121010221210 has 32 divisors (see below), whose sum is σ = 223166219472. Its totient is φ = 47216056320.

The previous prime is 121010221207. The next prime is 121010221217. The reversal of 121010221210 is 12122010121.

It can be written as a sum of positive squares in 8 ways, for example, as 19422045769 + 101588175441 = 139363^2 + 318729^2 .

It is not an unprimeable number, because it can be changed into a prime (121010221217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3087094 + ... + 3126046.

Almost surely, 2^121010221210 is an apocalyptic number.

121010221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121010221210 is a deficient number, since it is larger than the sum of its proper divisors (102155998262).

121010221210 is a wasteful number, since it uses less digits than its factorization.

121010221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46578.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121010221210 its reverse (12122010121), we get a palindrome (133132231331).

It can be divided in two parts, 1210 and 10221210, that multiplied together give a square (12367664100 = 111210²).

The spelling of 121010221210 in words is "one hundred twenty-one billion, ten million, two hundred twenty-one thousand, two hundred ten".