10302211231221 has 64 divisors (see below), whose sum is σ = 17424304128000. Its totient is φ = 5269719119616.

The previous prime is 10302211231219. The next prime is 10302211231271. The reversal of 10302211231221 is 12213211220301.

It is not a de Polignac number, because 10302211231221 - 2¹ = 10302211231219 is a prime.

It is a super-2 number, since 2×10302211231221² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10302211231201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2284521 + ... + 5081678.

It is an arithmetic number, because the mean of its divisors is an integer number (272254752000).

Almost surely, 2^{10302211231221} is an apocalyptic number.

It is an amenable number.

10302211231221 is a deficient number, since it is larger than the sum of its proper divisors (7122092896779).

10302211231221 is a wasteful number, since it uses less digits than its factorization.

10302211231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7366378.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 10302211231221 its reverse (12213211220301), we get a palindrome (22515422451522).

The spelling of 10302211231221 in words is "ten trillion, three hundred two billion, two hundred eleven million, two hundred thirty-one thousand, two hundred twenty-one".