212001012135 has 48 divisors (see below), whose sum is σ = 401001812640. Its totient is φ = 102755761920.

The previous prime is 212001012109. The next prime is 212001012143. The reversal of 212001012135 is 531210100212.

It is not a de Polignac number, because 212001012135 - 2¹⁰ = 212001011111 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1532037 + ... + 1664673.

It is an arithmetic number, because the mean of its divisors is an integer number (8354204430).

Almost surely, 2^212001012135 is an apocalyptic number.

212001012135 is a deficient number, since it is larger than the sum of its proper divisors (189000800505).

212001012135 is a wasteful number, since it uses less digits than its factorization.

212001012135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135888 (or 135885 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 212001012135 its reverse (531210100212), we get a palindrome (743211112347).

The spelling of 212001012135 in words is "two hundred twelve billion, one million, twelve thousand, one hundred thirty-five".