20221212102 has 96 divisors (see below), whose sum is σ = 52033800672. Its totient is φ = 5188893696.

The previous prime is 20221212101. The next prime is 20221212113. The reversal of 20221212102 is 20121212202.

It is a super-3 number, since 3×20221212102³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221212101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69918 + ... + 212910.

It is an arithmetic number, because the mean of its divisors is an integer number (542018757).

Almost surely, 2^20221212102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20221212102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26016900336).

20221212102 is an abundant number, since it is smaller than the sum of its proper divisors (31812588570).

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

20221212102 is a wasteful number, since it uses less digits than its factorization.

20221212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143062 (or 143055 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20221212102 its reverse (20121212202), we get a palindrome (40342424304).

It can be divided in two parts, 20 and 221212102, that added together give a palindrome (221212122).

The spelling of 20221212102 in words is "twenty billion, two hundred twenty-one million, two hundred twelve thousand, one hundred two".