201212111019 has 16 divisors (see below), whose sum is σ = 282719049984. Its totient is φ = 127038780000.

The previous prime is 201212111011. The next prime is 201212111021. The reversal of 201212111019 is 910111212102.

It is not a de Polignac number, because 201212111019 - 2³ = 201212111011 is a prime.

It is a super-2 number, since 2×201212111019² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201212110986 and 201212111004.

It is not an unprimeable number, because it can be changed into a prime (201212111011) 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, 14429257 + ... + 14443194.

It is an arithmetic number, because the mean of its divisors is an integer number (17669940624).

Almost surely, 2^201212111019 is an apocalyptic number.

201212111019 is a deficient number, since it is larger than the sum of its proper divisors (81506938965).

201212111019 is a wasteful number, since it uses less digits than its factorization.

201212111019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28872578.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 201212111019 in words is "two hundred one billion, two hundred twelve million, one hundred eleven thousand, nineteen".