201531000120211 has 8 divisors (see below), whose sum is σ = 212944502833920. Its totient is φ = 190198158203592.

The previous prime is 201531000120161. The next prime is 201531000120239. The reversal of 201531000120211 is 112021000135102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201531000120211 - 2⁴¹ = 199331976864659 is a prime.

It is a super-2 number, since 2×201531000120211² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201531000120011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20165194135 + ... + 20165204128.

It is an arithmetic number, because the mean of its divisors is an integer number (26618062854240).

Almost surely, 2^{201531000120211} is an apocalyptic number.

201531000120211 is a deficient number, since it is larger than the sum of its proper divisors (11413502713709).

201531000120211 is a wasteful number, since it uses less digits than its factorization.

201531000120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40330398545.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 201531000120211 its reverse (112021000135102), we get a palindrome (313552000255313).

The spelling of 201531000120211 in words is "two hundred one trillion, five hundred thirty-one billion, one hundred twenty thousand, two hundred eleven".