1021111020212 has 12 divisors (see below), whose sum is σ = 1793587202820. Its totient is φ = 508657533696.

The previous prime is 1021111020203. The next prime is 1021111020247. The reversal of 1021111020212 is 2120201111201.

It can be written as a sum of positive squares in 2 ways, for example, as 277387608976 + 743723411236 = 526676^2 + 862394^2 .

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, 474492893 + ... + 474495044.

It is an arithmetic number, because the mean of its divisors is an integer number (149465600235).

Almost surely, 2^{1021111020212} is an apocalyptic number.

It is an amenable number.

1021111020212 is a deficient number, since it is larger than the sum of its proper divisors (772476182608).

1021111020212 is a wasteful number, since it uses less digits than its factorization.

1021111020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948988210 (or 948988208 counting only the distinct ones).

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

Adding to 1021111020212 its reverse (2120201111201), we get a palindrome (3141312131413).

The spelling of 1021111020212 in words is "one trillion, twenty-one billion, one hundred eleven million, twenty thousand, two hundred twelve".