1021232101 has 4 divisors (see below), whose sum is σ = 1054175104. Its totient is φ = 988289100.

The previous prime is 1021232099. The next prime is 1021232111. The reversal of 1021232101 is 1012321201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1021232101 - 2¹ = 1021232099 is a prime.

It is a super-2 number, since 2×1021232101² = 2085830008225748402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021232111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16471455 + ... + 16471516.

It is an arithmetic number, because the mean of its divisors is an integer number (263543776).

Almost surely, 2^1021232101 is an apocalyptic number.

It is an amenable number.

1021232101 is a deficient number, since it is larger than the sum of its proper divisors (32943003).

1021232101 is an equidigital number, since it uses as much as digits as its factorization.

1021232101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32943002.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1021232101 is about 31956.7223131535. The cubic root of 1021232101 is about 1007.0278604732.

Adding to 1021232101 its reverse (1012321201), we get a palindrome (2033553302).

The spelling of 1021232101 in words is "one billion, twenty-one million, two hundred thirty-two thousand, one hundred one".