1020111203212 has 12 divisors (see below), whose sum is σ = 1785201893496. Its totient is φ = 510053519360.

The previous prime is 1020111203197. The next prime is 1020111203231. The reversal of 1020111203212 is 2123021110201.

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, 1253523 + ... + 1900405.

It is an arithmetic number, because the mean of its divisors is an integer number (148766824458).

Almost surely, 2^{1020111203212} is an apocalyptic number.

It is an amenable number.

1020111203212 is a deficient number, since it is larger than the sum of its proper divisors (765090690284).

1020111203212 is a wasteful number, since it uses less digits than its factorization.

1020111203212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041128 (or 1041126 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1020111203212 its reverse (2123021110201), we get a palindrome (3143132313413).

The spelling of 1020111203212 in words is "one trillion, twenty billion, one hundred eleven million, two hundred three thousand, two hundred twelve".