21220030101030 has 16 divisors (see below), whose sum is σ = 50928072242544. Its totient is φ = 5658674693600.

The previous prime is 21220030101029. The next prime is 21220030101043. The reversal of 21220030101030 is 3010103002212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353667168321 + ... + 353667168380.

It is an arithmetic number, because the mean of its divisors is an integer number (3183004515159).

Almost surely, 2^{21220030101030} is an apocalyptic number.

21220030101030 is an abundant number, since it is smaller than the sum of its proper divisors (29708042141514).

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

21220030101030 is a wasteful number, since it uses less digits than its factorization.

21220030101030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707334336711.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21220030101030 its reverse (3010103002212), we get a palindrome (24230133103242).

The spelling of 21220030101030 in words is "twenty-one trillion, two hundred twenty billion, thirty million, one hundred one thousand, thirty".