20211101011212 has 48 divisors (see below), whose sum is σ = 50103941028960. Its totient is φ = 6328918858752.

The previous prime is 20211101011181. The next prime is 20211101011229. The reversal of 20211101011212 is 21211010111202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20211101011191 and 20211101011200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 784823293 + ... + 784849044.

It is an arithmetic number, because the mean of its divisors is an integer number (1043832104770).

Almost surely, 2^{20211101011212} is an apocalyptic number.

It is an amenable number.

20211101011212 is an abundant number, since it is smaller than the sum of its proper divisors (29892840017748).

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

20211101011212 is a wasteful number, since it uses less digits than its factorization.

20211101011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569672410 (or 1569672408 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20211101011212 its reverse (21211010111202), we get a palindrome (41422111122414).

The spelling of 20211101011212 in words is "twenty trillion, two hundred eleven billion, one hundred one million, eleven thousand, two hundred twelve".