20422101 has 8 divisors (see below), whose sum is σ = 31119424. Its totient is φ = 11669760.

The previous prime is 20422097. The next prime is 20422121. The reversal of 20422101 is 10122402.

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

It is not a de Polignac number, because 20422101 - 2² = 20422097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20422121) 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, 486220 + ... + 486261.

It is an arithmetic number, because the mean of its divisors is an integer number (3889928).

Almost surely, 2^20422101 is an apocalyptic number.

20422101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20422101 is a deficient number, since it is larger than the sum of its proper divisors (10697323).

20422101 is an equidigital number, since it uses as much as digits as its factorization.

20422101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972491.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 20422101 is about 4519.0818757796. The cubic root of 20422101 is about 273.3380802599.

Adding to 20422101 its reverse (10122402), we get a palindrome (30544503).

The spelling of 20422101 in words is "twenty million, four hundred twenty-two thousand, one hundred one".