211021121120010 has 128 divisors (see below), whose sum is σ = 543895694161920. Its totient is φ = 52234336417536.

The previous prime is 211021121119993. The next prime is 211021121120023. The reversal of 211021121120010 is 10021121120112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17745397 + ... + 27146663.

It is an arithmetic number, because the mean of its divisors is an integer number (4249185110640).

Almost surely, 2^{211021121120010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211021121120010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271947847080960).

211021121120010 is an abundant number, since it is smaller than the sum of its proper divisors (332874573041910).

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

211021121120010 is a wasteful number, since it uses less digits than its factorization.

211021121120010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9402092.

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

Adding to 211021121120010 its reverse (10021121120112), we get a palindrome (221042242240122).

The spelling of 211021121120010 in words is "two hundred eleven trillion, twenty-one billion, one hundred twenty-one million, one hundred twenty thousand, ten".