10211121222021 has 6 divisors (see below), whose sum is σ = 14749397320710. Its totient is φ = 6807414148008.

The previous prime is 10211121222013. The next prime is 10211121222091. The reversal of 10211121222021 is 12022212111201.

10211121222021 is a `hidden beast` number, since 1 + 0 + 211 + 1 + 212 + 220 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9340884113796 + 870237108225 = 3056286^2 + 932865^2 .

It is not a de Polignac number, because 10211121222021 - 2³ = 10211121222013 is a prime.

It is a super-2 number, since 2×10211121222021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10211121221985 and 10211121222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211121222011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567284512326 + ... + 567284512343.

It is an arithmetic number, because the mean of its divisors is an integer number (2458232886785).

Almost surely, 2^{10211121222021} is an apocalyptic number.

It is an amenable number.

10211121222021 is a deficient number, since it is larger than the sum of its proper divisors (4538276098689).

10211121222021 is a wasteful number, since it uses less digits than its factorization.

10211121222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134569024675 (or 1134569024672 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10211121222021 its reverse (12022212111201), we get a palindrome (22233333333222).

The spelling of 10211121222021 in words is "ten trillion, two hundred eleven billion, one hundred twenty-one million, two hundred twenty-two thousand, twenty-one".