10222121211021 has 6 divisors (see below), whose sum is σ = 14765286193710. Its totient is φ = 6814747474008.

The previous prime is 10222121210989. The next prime is 10222121211031. The reversal of 10222121211021 is 12011212122201.

10222121211021 is a `hidden beast` number, since 102 + 221 + 212 + 110 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8135107588521 + 2087013622500 = 2852211^2 + 1444650^2 .

It is not a de Polignac number, because 10222121211021 - 2⁵ = 10222121210989 is a prime.

It is a super-2 number, since 2×10222121211021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10222121210985 and 10222121211003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10222121211031) 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, 567895622826 + ... + 567895622843.

It is an arithmetic number, because the mean of its divisors is an integer number (2460881032285).

Almost surely, 2^{10222121211021} is an apocalyptic number.

It is an amenable number.

10222121211021 is a deficient number, since it is larger than the sum of its proper divisors (4543164982689).

10222121211021 is a wasteful number, since it uses less digits than its factorization.

10222121211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135791245675 (or 1135791245672 counting only the distinct ones).

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

Adding to 10222121211021 its reverse (12011212122201), we get a palindrome (22233333333222).

The spelling of 10222121211021 in words is "ten trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred eleven thousand, twenty-one".