211012202011021 has 8 divisors (see below), whose sum is σ = 212954735954840. Its totient is φ = 209069788834368.

The previous prime is 211012202010937. The next prime is 211012202011069. The reversal of 211012202011021 is 120110202210112.

It can be written as a sum of positive squares in 4 ways, for example, as 100808628122500 + 110203573888521 = 10040350^2 + 10497789^2 .

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 211012202011021 - 2¹⁷ = 211012201879949 is a prime.

It is a super-2 number, since 2×211012202011021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211012202010986 and 211012202011004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012202011421) 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, 26679306 + ... + 33672091.

It is an arithmetic number, because the mean of its divisors is an integer number (26619341994355).

Almost surely, 2^{211012202011021} is an apocalyptic number.

It is an amenable number.

211012202011021 is a deficient number, since it is larger than the sum of its proper divisors (1942533943819).

211012202011021 is a wasteful number, since it uses less digits than its factorization.

211012202011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60383583.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211012202011021 its reverse (120110202210112), we get a palindrome (331122404221133).

The spelling of 211012202011021 in words is "two hundred eleven trillion, twelve billion, two hundred two million, eleven thousand, twenty-one".