10212121220022 has 24 divisors (see below), whose sum is σ = 22840013052480. Its totient is φ = 3294232651440.

The previous prime is 10212121219999. The next prime is 10212121220023. The reversal of 10212121220022 is 22002212121201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10212121219977 and 10212121220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212121220023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9150645697 + ... + 9150646812.

It is an arithmetic number, because the mean of its divisors is an integer number (951667210520).

Almost surely, 2^{10212121220022} is an apocalyptic number.

10212121220022 is an abundant number, since it is smaller than the sum of its proper divisors (12627891832458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10212121220022 is a wasteful number, since it uses less digits than its factorization.

10212121220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18301292548 (or 18301292545 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10212121220022 its reverse (22002212121201), we get a palindrome (32214333341223).

The spelling of 10212121220022 in words is "ten trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twenty thousand, twenty-two".