10002111211220 has 12 divisors (see below), whose sum is σ = 21004433543604. Its totient is φ = 4000844484480.

The previous prime is 10002111211181. The next prime is 10002111211223. The reversal of 10002111211220 is 2211211120001.

It can be written as a sum of positive squares in 2 ways, for example, as 3052022976016 + 6950088235204 = 1747004^2 + 2636302^2 .

It is a super-2 number, since 2×10002111211220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10002111211195 and 10002111211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002111211223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250052780261 + ... + 250052780300.

It is an arithmetic number, because the mean of its divisors is an integer number (1750369461967).

Almost surely, 2^{10002111211220} is an apocalyptic number.

10002111211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10002111211220 is an abundant number, since it is smaller than the sum of its proper divisors (11002322332384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10002111211220 is a wasteful number, since it uses less digits than its factorization.

10002111211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500105560570 (or 500105560568 counting only the distinct ones).

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

Adding to 10002111211220 its reverse (2211211120001), we get a palindrome (12213322331221).

The spelling of 10002111211220 in words is "ten trillion, two billion, one hundred eleven million, two hundred eleven thousand, two hundred twenty".