1000021112212 has 24 divisors (see below), whose sum is σ = 1811175125760. Its totient is φ = 482557592160.

The previous prime is 1000021112203. The next prime is 1000021112263. The reversal of 1000021112212 is 2122111200001.

It is a junction number, because it is equal to n+sod(n) for n = 1000021112192 and 1000021112201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1619464 + ... + 2150047.

It is an arithmetic number, because the mean of its divisors is an integer number (75465630240).

Almost surely, 2^{1000021112212} is an apocalyptic number.

It is an amenable number.

1000021112212 is a deficient number, since it is larger than the sum of its proper divisors (811154013548).

1000021112212 is a wasteful number, since it uses less digits than its factorization.

1000021112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771831 (or 3771829 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1000021112212 its reverse (2122111200001), we get a palindrome (3122132312213).

The spelling of 1000021112212 in words is "one trillion, twenty-one million, one hundred twelve thousand, two hundred twelve".