212011111200136 has 8 divisors (see below), whose sum is σ = 397520833500270. Its totient is φ = 106005555600064.

The previous prime is 212011111200101. The next prime is 212011111200137. The reversal of 212011111200136 is 631002111110212.

It can be written as a sum of positive squares in only one way, i.e., 209638371463236 + 2372739736900 = 14478894^2 + 1540370^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×212011111200136² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212011111200137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13250694450001 + ... + 13250694450016.

Almost surely, 2^{212011111200136} is an apocalyptic number.

It is an amenable number.

212011111200136 is a deficient number, since it is larger than the sum of its proper divisors (185509722300134).

212011111200136 is a wasteful number, since it uses less digits than its factorization.

212011111200136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26501388900023 (or 26501388900019 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 212011111200136 its reverse (631002111110212), we get a palindrome (843013222310348).

The spelling of 212011111200136 in words is "two hundred twelve trillion, eleven billion, one hundred eleven million, two hundred thousand, one hundred thirty-six".