121211020011010 has 8 divisors (see below), whose sum is σ = 218179836019836. Its totient is φ = 48484408004400.

The previous prime is 121211020010947. The next prime is 121211020011041. The reversal of 121211020011010 is 10110020112121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 120915776661241 + 295243349769 = 10996171^2 + 543363^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×121211020011010² (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 (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6060551000541 + ... + 6060551000560.

Almost surely, 2^{121211020011010} is an apocalyptic number.

121211020011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121211020011010 is a deficient number, since it is larger than the sum of its proper divisors (96968816008826).

121211020011010 is a wasteful number, since it uses less digits than its factorization.

121211020011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12121102001108.

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

Adding to 121211020011010 its reverse (10110020112121), we get a palindrome (131321040123131).

The spelling of 121211020011010 in words is "one hundred twenty-one trillion, two hundred eleven billion, twenty million, eleven thousand, ten".