1002111212021 has 8 divisors (see below), whose sum is σ = 1004358345600. Its totient is φ = 999864436032.

The previous prime is 1002111211991. The next prime is 1002111212119. The reversal of 1002111212021 is 1202121112001.

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

It is a cyclic number.

It is not a de Polignac number, because 1002111212021 - 2¹⁴ = 1002111195637 is a prime.

It is a super-2 number, since 2×1002111212021² (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 = 1002111211987 and 1002111212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002161212021) 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, 5982221 + ... + 6147453.

It is an arithmetic number, because the mean of its divisors is an integer number (125544793200).

Almost surely, 2^{1002111212021} is an apocalyptic number.

It is an amenable number.

1002111212021 is a deficient number, since it is larger than the sum of its proper divisors (2247133579).

1002111212021 is a wasteful number, since it uses less digits than its factorization.

1002111212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178795.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1002111212021 its reverse (1202121112001), we get a palindrome (2204232324022).

The spelling of 1002111212021 in words is "one trillion, two billion, one hundred eleven million, two hundred twelve thousand, twenty-one".