4021210122101 has 4 divisors (see below), whose sum is σ = 4119288417804. Its totient is φ = 3923131826400.

The previous prime is 4021210122089. The next prime is 4021210122103. The reversal of 4021210122101 is 1012210121204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2349552480625 + 1671657641476 = 1532825^2 + 1292926^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021210122101 - 2¹⁸ = 4021209859957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4021210122101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021210122103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49039147790 + ... + 49039147871.

It is an arithmetic number, because the mean of its divisors is an integer number (1029822104451).

Almost surely, 2^{4021210122101} is an apocalyptic number.

4021210122101 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4021210122101 is a deficient number, since it is larger than the sum of its proper divisors (98078295703).

4021210122101 is an equidigital number, since it uses as much as digits as its factorization.

4021210122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98078295702.

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

Adding to 4021210122101 its reverse (1012210121204), we get a palindrome (5033420243305).

The spelling of 4021210122101 in words is "four trillion, twenty-one billion, two hundred ten million, one hundred twenty-two thousand, one hundred one".