21220212001112 has 8 divisors (see below), whose sum is σ = 39787897502100. Its totient is φ = 10610106000552.

The previous prime is 21220212001097. The next prime is 21220212001127. The reversal of 21220212001112 is 21110021202212.

It is an interprime number because it is at equal distance from previous prime (21220212001097) and next prime (21220212001127).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1326263250062 + ... + 1326263250077.

Almost surely, 2^{21220212001112} is an apocalyptic number.

It is an amenable number.

21220212001112 is a deficient number, since it is larger than the sum of its proper divisors (18567685500988).

21220212001112 is a wasteful number, since it uses less digits than its factorization.

21220212001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652526500145 (or 2652526500141 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21220212001112 its reverse (21110021202212), we get a palindrome (42330233203324).

The spelling of 21220212001112 in words is "twenty-one trillion, two hundred twenty billion, two hundred twelve million, one thousand, one hundred twelve".