20200101222001 has 4 divisors (see below), whose sum is σ = 21388342470372. Its totient is φ = 19011859973632.

The previous prime is 20200101221969. The next prime is 20200101222011. The reversal of 20200101222001 is 10022210100202.

It is a happy number.

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 14261990015025 + 5938111206976 = 3776505^2 + 2436824^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200101222001 - 2⁵ = 20200101221969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20200101222011) 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, 594120624160 + ... + 594120624193.

It is an arithmetic number, because the mean of its divisors is an integer number (5347085617593).

Almost surely, 2^{20200101222001} is an apocalyptic number.

It is an amenable number.

20200101222001 is a deficient number, since it is larger than the sum of its proper divisors (1188241248371).

20200101222001 is a wasteful number, since it uses less digits than its factorization.

20200101222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188241248370.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20200101222001 its reverse (10022210100202), we get a palindrome (30222311322203).

The spelling of 20200101222001 in words is "twenty trillion, two hundred billion, one hundred one million, two hundred twenty-two thousand, one".