1021420122273 has 32 divisors (see below), whose sum is σ = 1515314718720. Its totient is φ = 680002540560.

The previous prime is 1021420122271. The next prime is 1021420122299. The reversal of 1021420122273 is 3722210241201.

It is a happy number.

1021420122273 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 420 + 12 + 227 + 3 = 666.

It is not a de Polignac number, because 1021420122273 - 2¹ = 1021420122271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1021420122271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66878628 + ... + 66893898.

It is an arithmetic number, because the mean of its divisors is an integer number (47353584960).

Almost surely, 2^{1021420122273} is an apocalyptic number.

It is an amenable number.

1021420122273 is a deficient number, since it is larger than the sum of its proper divisors (493894596447).

1021420122273 is a wasteful number, since it uses less digits than its factorization.

1021420122273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18554 (or 18548 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

Adding to 1021420122273 its reverse (3722210241201), we get a palindrome (4743630363474).

The spelling of 1021420122273 in words is "one trillion, twenty-one billion, four hundred twenty million, one hundred twenty-two thousand, two hundred seventy-three".