1023020101221 has 8 divisors (see below), whose sum is σ = 1444263672384. Its totient is φ = 641894965440.

The previous prime is 1023020101219. The next prime is 1023020101241. The reversal of 1023020101221 is 1221010203201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1023020101221 - 2¹ = 1023020101219 is a prime.

It is a super-3 number, since 3×1023020101221³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1023020101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023020101211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10029608785 + ... + 10029608886.

It is an arithmetic number, because the mean of its divisors is an integer number (180532959048).

Almost surely, 2^{1023020101221} is an apocalyptic number.

It is an amenable number.

1023020101221 is a deficient number, since it is larger than the sum of its proper divisors (421243571163).

1023020101221 is a wasteful number, since it uses less digits than its factorization.

1023020101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20059217691.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1023020101221 its reverse (1221010203201), we get a palindrome (2244030304422).

The spelling of 1023020101221 in words is "one trillion, twenty-three billion, twenty million, one hundred one thousand, two hundred twenty-one".