1021001120212 has 6 divisors (see below), whose sum is σ = 1786751960378. Its totient is φ = 510500560104.

The previous prime is 1021001120207. The next prime is 1021001120233. The reversal of 1021001120212 is 2120211001201.

It can be written as a sum of positive squares in only one way, i.e., 1021001118916 + 1296 = 1010446^2 + 36^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1021001120192 and 1021001120201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127625140023 + ... + 127625140030.

Almost surely, 2^{1021001120212} is an apocalyptic number.

It is an amenable number.

1021001120212 is a deficient number, since it is larger than the sum of its proper divisors (765750840166).

1021001120212 is a wasteful number, since it uses less digits than its factorization.

1021001120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255250280057 (or 255250280055 counting only the distinct ones).

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

Adding to 1021001120212 its reverse (2120211001201), we get a palindrome (3141212121413).

The spelling of 1021001120212 in words is "one trillion, twenty-one billion, one million, one hundred twenty thousand, two hundred twelve".