1002021110212 has 6 divisors (see below), whose sum is σ = 1753536942878. Its totient is φ = 501010555104.

The previous prime is 1002021110143. The next prime is 1002021110219. The reversal of 1002021110212 is 2120111202001.

It can be written as a sum of positive squares in only one way, i.e., 605869197376 + 396151912836 = 778376^2 + 629406^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1002021110192 and 1002021110201.

It is not an unprimeable number, because it can be changed into a prime (1002021110219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125252638773 + ... + 125252638780.

Almost surely, 2^{1002021110212} is an apocalyptic number.

It is an amenable number.

1002021110212 is a deficient number, since it is larger than the sum of its proper divisors (751515832666).

1002021110212 is a wasteful number, since it uses less digits than its factorization.

1002021110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250505277557 (or 250505277555 counting only the distinct ones).

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

Adding to 1002021110212 its reverse (2120111202001), we get a palindrome (3122132312213).

The spelling of 1002021110212 in words is "one trillion, two billion, twenty-one million, one hundred ten thousand, two hundred twelve".