20022100111212 has 24 divisors (see below), whose sum is σ = 46722323751936. Its totient is φ = 6673449061968.

The previous prime is 20022100111199. The next prime is 20022100111217. The reversal of 20022100111212 is 21211100122002.

It is a junction number, because it is equal to n+sod(n) for n = 20022100111191 and 20022100111200.

It is not an unprimeable number, because it can be changed into a prime (20022100111217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72895768 + ... + 73169919.

It is an arithmetic number, because the mean of its divisors is an integer number (1946763489664).

Almost surely, 2^{20022100111212} is an apocalyptic number.

It is an amenable number.

20022100111212 is an abundant number, since it is smaller than the sum of its proper divisors (26700223640724).

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

20022100111212 is a wasteful number, since it uses less digits than its factorization.

20022100111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146077117 (or 146077115 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20022100111212 its reverse (21211100122002), we get a palindrome (41233200233214).

The spelling of 20022100111212 in words is "twenty trillion, twenty-two billion, one hundred million, one hundred eleven thousand, two hundred twelve".