1010010121221 has 8 divisors (see below), whose sum is σ = 1359754726720. Its totient is φ = 666802798272.

The previous prime is 1010010121217. The next prime is 1010010121223. The reversal of 1010010121221 is 1221210100101.

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

It is not a de Polignac number, because 1010010121221 - 2² = 1010010121217 is a prime.

It is a super-2 number, since 2×1010010121221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010010121197 and 1010010121206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010010121223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1634320276 + ... + 1634320893.

It is an arithmetic number, because the mean of its divisors is an integer number (169969340840).

Almost surely, 2^{1010010121221} is an apocalyptic number.

It is an amenable number.

1010010121221 is a deficient number, since it is larger than the sum of its proper divisors (349744605499).

1010010121221 is a wasteful number, since it uses less digits than its factorization.

1010010121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3268641275.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1010010121221 its reverse (1221210100101), we get a palindrome (2231220221322).

The spelling of 1010010121221 in words is "one trillion, ten billion, ten million, one hundred twenty-one thousand, two hundred twenty-one".