20211201111020 has 48 divisors (see below), whose sum is σ = 42476696790528. Its totient is φ = 8078162641920.

The previous prime is 20211201110879. The next prime is 20211201111041. The reversal of 20211201111020 is 2011110211202.

It is a junction number, because it is equal to n+sod(n) for n = 20211201110986 and 20211201111004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348097832 + ... + 348155888.

It is an arithmetic number, because the mean of its divisors is an integer number (884931183136).

Almost surely, 2^{20211201111020} is an apocalyptic number.

20211201111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211201111020 is an abundant number, since it is smaller than the sum of its proper divisors (22265495679508).

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

20211201111020 is a wasteful number, since it uses less digits than its factorization.

20211201111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71370 (or 71368 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20211201111020 its reverse (2011110211202), we get a palindrome (22222311322222).

The spelling of 20211201111020 in words is "twenty trillion, two hundred eleven billion, two hundred one million, one hundred eleven thousand, twenty".