1000021020212 has 12 divisors (see below), whose sum is σ = 1750072862916. Its totient is φ = 500000202240.

The previous prime is 1000021020199. The next prime is 1000021020227. The reversal of 1000021020212 is 2120201200001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 227668305316 + 772352714896 = 477146^2 + 878836^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1000021020193 and 1000021020202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2356589 + ... + 2748372.

It is an arithmetic number, because the mean of its divisors is an integer number (145839405243).

Almost surely, 2^{1000021020212} is an apocalyptic number.

It is an amenable number.

1000021020212 is a deficient number, since it is larger than the sum of its proper divisors (750051842704).

1000021020212 is a wasteful number, since it uses less digits than its factorization.

1000021020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153938 (or 5153936 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1000021020212 its reverse (2120201200001), we get a palindrome (3120222220213).

The spelling of 1000021020212 in words is "one trillion, twenty-one million, twenty thousand, two hundred twelve".