201012212211678 has 96 divisors (see below), whose sum is σ = 498255644490240. Its totient is φ = 57373095251520.

The previous prime is 201012212211677. The next prime is 201012212211709. The reversal of 201012212211678 is 876112212210102.

201012212211678 is a `hidden beast` number, since 201 + 0 + 1 + 221 + 221 + 1 + 6 + 7 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201012212211673) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1617208713 + ... + 1617333003.

It is an arithmetic number, because the mean of its divisors is an integer number (5190162963440).

Almost surely, 2^{201012212211678} is an apocalyptic number.

201012212211678 is an abundant number, since it is smaller than the sum of its proper divisors (297243432278562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201012212211678 is a wasteful number, since it uses less digits than its factorization.

201012212211678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137382 (or 137379 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The spelling of 201012212211678 in words is "two hundred one trillion, twelve billion, two hundred twelve million, two hundred eleven thousand, six hundred seventy-eight".