2124201101021 has 8 divisors (see below), whose sum is σ = 2169016235064. Its totient is φ = 2079561369600.

The previous prime is 2124201100943. The next prime is 2124201101081. The reversal of 2124201101021 is 1201011024212.

It can be written as a sum of positive squares in 4 ways, for example, as 445841985796 + 1678359115225 = 667714^2 + 1295515^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2124201101021 - 2¹⁴ = 2124201084637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124201101081) 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, 43826180 + ... + 43874621.

It is an arithmetic number, because the mean of its divisors is an integer number (271127029383).

Almost surely, 2^{2124201101021} is an apocalyptic number.

It is an amenable number.

2124201101021 is a deficient number, since it is larger than the sum of its proper divisors (44815134043).

2124201101021 is an equidigital number, since it uses as much as digits as its factorization.

2124201101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87701311.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2124201101021 its reverse (1201011024212), we get a palindrome (3325212125233).

It can be divided in two parts, 2124201 and 101021, that added together give a palindrome (2225222).

The spelling of 2124201101021 in words is "two trillion, one hundred twenty-four billion, two hundred one million, one hundred one thousand, twenty-one".