10221000002121 has 8 divisors (see below), whose sum is σ = 13689112111360. Its totient is φ = 6783443947152.

The previous prime is 10221000002119. The next prime is 10221000002149. The reversal of 10221000002121 is 12120000012201.

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

It is not a de Polignac number, because 10221000002121 - 2¹ = 10221000002119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10221000002097 and 10221000002106.

It is not an unprimeable number, because it can be changed into a prime (10221000000121) 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, 7639012786 + ... + 7639014123.

It is an arithmetic number, because the mean of its divisors is an integer number (1711139013920).

Almost surely, 2^{10221000002121} is an apocalyptic number.

It is an amenable number.

10221000002121 is a deficient number, since it is larger than the sum of its proper divisors (3468112109239).

10221000002121 is a wasteful number, since it uses less digits than its factorization.

10221000002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15278027135.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10221000002121 its reverse (12120000012201), we get a palindrome (22341000014322).

The spelling of 10221000002121 in words is "ten trillion, two hundred twenty-one billion, two thousand, one hundred twenty-one".