201010021993 has 16 divisors (see below), whose sum is σ = 219690600192. Its totient is φ = 182397490000.

The previous prime is 201010021973. The next prime is 201010021999. The reversal of 201010021993 is 399120010102.

It is not a de Polignac number, because 201010021993 - 2¹³ = 201010013801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201010021999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33437358 + ... + 33443368.

It is an arithmetic number, because the mean of its divisors is an integer number (13730662512).

Almost surely, 2^201010021993 is an apocalyptic number.

It is an amenable number.

201010021993 is a deficient number, since it is larger than the sum of its proper divisors (18680578199).

201010021993 is a wasteful number, since it uses less digits than its factorization.

201010021993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11156.

The product of its (nonzero) digits is 972, while the sum is 28.

It can be divided in two parts, 2010 and 10021993, that added together give a triangular number (10024003 = T₄₄₇₇).

The spelling of 201010021993 in words is "two hundred one billion, ten million, twenty-one thousand, nine hundred ninety-three".