211212390148 has 96 divisors (see below), whose sum is σ = 408560882688. Its totient is φ = 95103590400.

The previous prime is 211212390133. The next prime is 211212390197. The reversal of 211212390148 is 841093212112.

It is a super-2 number, since 2×211212390148² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130296778 + ... + 130298398.

It is an arithmetic number, because the mean of its divisors is an integer number (4255842528).

Almost surely, 2^211212390148 is an apocalyptic number.

It is an amenable number.

211212390148 is a deficient number, since it is larger than the sum of its proper divisors (197348492540).

211212390148 is a wasteful number, since it uses less digits than its factorization.

211212390148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333 (or 2331 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 211212390148 in words is "two hundred eleven billion, two hundred twelve million, three hundred ninety thousand, one hundred forty-eight".