21030222220033 has 16 divisors (see below), whose sum is σ = 23080726233936. Its totient is φ = 19041719823360.

The previous prime is 21030222220027. The next prime is 21030222220103. The reversal of 21030222220033 is 33002222203012.

It can be written as a sum of positive squares in 8 ways, for example, as 798865926849 + 20231356293184 = 893793^2 + 4497928^2 .

It is not a de Polignac number, because 21030222220033 - 2²⁹ = 21029685349121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21030222219986 and 21030222220013.

It is not an unprimeable number, because it can be changed into a prime (21030222227033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 713508 + ... + 6524533.

It is an arithmetic number, because the mean of its divisors is an integer number (1442545389621).

Almost surely, 2^{21030222220033} is an apocalyptic number.

It is an amenable number.

21030222220033 is a deficient number, since it is larger than the sum of its proper divisors (2050504013903).

21030222220033 is a wasteful number, since it uses less digits than its factorization.

21030222220033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7242324.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21030222220033 its reverse (33002222203012), we get a palindrome (54032444423045).

The spelling of 21030222220033 in words is "twenty-one trillion, thirty billion, two hundred twenty-two million, two hundred twenty thousand, thirty-three".