20201212111211 has 8 divisors (see below), whose sum is σ = 20360609832960. Its totient is φ = 20041819593768.

The previous prime is 20201212111193. The next prime is 20201212111229. The reversal of 20201212111211 is 11211121210202.

It is an interprime number because it is at equal distance from previous prime (20201212111193) and next prime (20201212111229).

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

It is a cyclic number.

It is not a de Polignac number, because 20201212111211 - 2²⁶ = 20201145002347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20201212111211.

It is not an unprimeable number, because it can be changed into a prime (20201212114211) 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, 6685460 + ... + 9224846.

It is an arithmetic number, because the mean of its divisors is an integer number (2545076229120).

Almost surely, 2^{20201212111211} is an apocalyptic number.

20201212111211 is a deficient number, since it is larger than the sum of its proper divisors (159397721749).

20201212111211 is a wasteful number, since it uses less digits than its factorization.

20201212111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602153.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20201212111211 its reverse (11211121210202), we get a palindrome (31412333321413).

The spelling of 20201212111211 in words is "twenty trillion, two hundred one billion, two hundred twelve million, one hundred eleven thousand, two hundred eleven".