211211020201021 has 8 divisors (see below), whose sum is σ = 220521282981120. Its totient is φ = 201911355333072.

The previous prime is 211211020201019. The next prime is 211211020201037. The reversal of 211211020201021 is 120102020112112.

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 211211020201021 - 2¹ = 211211020201019 is a prime.

It is a super-2 number, since 2×211211020201021² (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 = 211211020200986 and 211211020201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211020201081) 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, 2649437301 + ... + 2649517018.

It is an arithmetic number, because the mean of its divisors is an integer number (27565160372640).

Almost surely, 2^{211211020201021} is an apocalyptic number.

It is an amenable number.

211211020201021 is a deficient number, since it is larger than the sum of its proper divisors (9310262780099).

211211020201021 is a wasteful number, since it uses less digits than its factorization.

211211020201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5298956075.

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

Adding to 211211020201021 its reverse (120102020112112), we get a palindrome (331313040313133).

The spelling of 211211020201021 in words is "two hundred eleven trillion, two hundred eleven billion, twenty million, two hundred one thousand, twenty-one".