21010102022112 has 288 divisors, whose sum is σ = 64574131450752. Its totient is φ = 5963777197056.

The previous prime is 21010102022101. The next prime is 21010102022171. The reversal of 21010102022112 is 21122020101012.

It is a junction number, because it is equal to n+sod(n) for n = 21010102022091 and 21010102022100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3836057518 + ... + 3836062994.

It is an arithmetic number, because the mean of its divisors is an integer number (224215734204).

Almost surely, 2^{21010102022112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21010102022112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32287065725376).

21010102022112 is an abundant number, since it is smaller than the sum of its proper divisors (43564029428640).

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

21010102022112 is a wasteful number, since it uses less digits than its factorization.

21010102022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10670 (or 10655 counting only the distinct ones).

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

Adding to 21010102022112 its reverse (21122020101012), we get a palindrome (42132122123124).

The spelling of 21010102022112 in words is "twenty-one trillion, ten billion, one hundred two million, twenty-two thousand, one hundred twelve".