20211212222102 has 16 divisors (see below), whose sum is σ = 33073124848272. Its totient is φ = 9186850168320.

The previous prime is 20211212222059. The next prime is 20211212222137. The reversal of 20211212222102 is 20122221211202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56078 + ... + 6358110.

It is an arithmetic number, because the mean of its divisors is an integer number (2067070303017).

Almost surely, 2^{20211212222102} is an apocalyptic number.

20211212222102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20211212222102 is a deficient number, since it is larger than the sum of its proper divisors (12861912626170).

20211212222102 is a wasteful number, since it uses less digits than its factorization.

20211212222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6447823.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20211212222102 its reverse (20122221211202), we get a palindrome (40333433433304).

The spelling of 20211212222102 in words is "twenty trillion, two hundred eleven billion, two hundred twelve million, two hundred twenty-two thousand, one hundred two".