212021121048 has 128 divisors (see below), whose sum is σ = 588736753920. Its totient is φ = 63088565760.

The previous prime is 212021121047. The next prime is 212021121071. The reversal of 212021121048 is 840121120212.

It is a happy number.

It is a super-3 number, since 3×212021121048³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021121047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5588190 + ... + 5626002.

It is an arithmetic number, because the mean of its divisors is an integer number (4599505890).

Almost surely, 2^212021121048 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 212021121048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294368376960).

212021121048 is an abundant number, since it is smaller than the sum of its proper divisors (376715632872).

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

212021121048 is a wasteful number, since it uses less digits than its factorization.

212021121048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38217 (or 38213 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The spelling of 212021121048 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, forty-eight".