1021101401 has 4 divisors (see below), whose sum is σ = 1074843600. Its totient is φ = 967359204.

The previous prime is 1021101391. The next prime is 1021101407. The reversal of 1021101401 is 1041011201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1041011201 = 17 ⋅61235953.

It is a cyclic number.

It is not a de Polignac number, because 1021101401 - 2¹⁴ = 1021085017 is a prime.

It is a super-2 number, since 2×1021101401² = 2085296142248325602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1021101407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26871071 + ... + 26871108.

It is an arithmetic number, because the mean of its divisors is an integer number (268710900).

Almost surely, 2^1021101401 is an apocalyptic number.

It is an amenable number.

1021101401 is a deficient number, since it is larger than the sum of its proper divisors (53742199).

1021101401 is an equidigital number, since it uses as much as digits as its factorization.

1021101401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53742198.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1021101401 is about 31954.6772945683. The cubic root of 1021101401 is about 1006.9848979392.

Adding to 1021101401 its reverse (1041011201), we get a palindrome (2062112602).

The spelling of 1021101401 in words is "one billion, twenty-one million, one hundred one thousand, four hundred one".