1011111200212 has 6 divisors (see below), whose sum is σ = 1769444600378. Its totient is φ = 505555600104.

The previous prime is 1011111200189. The next prime is 1011111200243. The reversal of 1011111200212 is 2120021111101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 986950850116 + 24160350096 = 993454^2 + 155436^2 .

It is a super-2 number, since 2×1011111200212² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011111200192 and 1011111200201.

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, 126388900023 + ... + 126388900030.

Almost surely, 2^{1011111200212} is an apocalyptic number.

It is an amenable number.

1011111200212 is a deficient number, since it is larger than the sum of its proper divisors (758333400166).

1011111200212 is a wasteful number, since it uses less digits than its factorization.

1011111200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252777800057 (or 252777800055 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1011111200212 its reverse (2120021111101), we get a palindrome (3131132311313).

The spelling of 1011111200212 in words is "one trillion, eleven billion, one hundred eleven million, two hundred thousand, two hundred twelve".