10212211122021 has 6 divisors (see below), whose sum is σ = 14750971620710. Its totient is φ = 6808140748008.

The previous prime is 10212211121977. The next prime is 10212211122023. The reversal of 10212211122021 is 12022111221201.

10212211122021 is a `hidden beast` number, since 1 + 0 + 212 + 211 + 1 + 220 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9361066491396 + 851144630625 = 3059586^2 + 922575^2 .

It is not a de Polignac number, because 10212211122021 - 2¹³ = 10212211113829 is a prime.

It is a super-2 number, since 2×10212211122021² (a number of 27 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 = 10212211121985 and 10212211122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212211122023) 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, 567345062326 + ... + 567345062343.

Almost surely, 2^{10212211122021} is an apocalyptic number.

It is an amenable number.

10212211122021 is a deficient number, since it is larger than the sum of its proper divisors (4538760498689).

10212211122021 is a wasteful number, since it uses less digits than its factorization.

10212211122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134690124675 (or 1134690124672 counting only the distinct ones).

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

Adding to 10212211122021 its reverse (12022111221201), we get a palindrome (22234322343222).

The spelling of 10212211122021 in words is "ten trillion, two hundred twelve billion, two hundred eleven million, one hundred twenty-two thousand, twenty-one".