20001201209958 has 32 divisors (see below), whose sum is σ = 40040530612992. Its totient is φ = 6660713852000.

The previous prime is 20001201209911. The next prime is 20001201209959. The reversal of 20001201209958 is 85990210210002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001201209959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55155133 + ... + 55516583.

It is an arithmetic number, because the mean of its divisors is an integer number (1251266581656).

Almost surely, 2^{20001201209958} is an apocalyptic number.

20001201209958 is an abundant number, since it is smaller than the sum of its proper divisors (20039329403034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001201209958 is a wasteful number, since it uses less digits than its factorization.

20001201209958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370220.

The product of its (nonzero) digits is 25920, while the sum is 39.

The spelling of 20001201209958 in words is "twenty trillion, one billion, two hundred one million, two hundred nine thousand, nine hundred fifty-eight".