21220002222070 has 32 divisors (see below), whose sum is σ = 38205097733088. Its totient is φ = 8485980373248.

The previous prime is 21220002222031. The next prime is 21220002222071. The reversal of 21220002222070 is 7022220002212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220002222071) 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, 1374077769 + ... + 1374093211.

It is an arithmetic number, because the mean of its divisors is an integer number (1193909304159).

Almost surely, 2^{21220002222070} is an apocalyptic number.

21220002222070 is a deficient number, since it is larger than the sum of its proper divisors (16985095511018).

21220002222070 is a wasteful number, since it uses less digits than its factorization.

21220002222070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39264.

The product of its (nonzero) digits is 896, while the sum is 22.

Adding to 21220002222070 its reverse (7022220002212), we get a palindrome (28242222224282).

The spelling of 21220002222070 in words is "twenty-one trillion, two hundred twenty billion, two million, two hundred twenty-two thousand, seventy".