201211661662102 has 16 divisors (see below), whose sum is σ = 371467683068832. Its totient is φ = 79600217800320.

The previous prime is 201211661662091. The next prime is 201211661662117. The reversal of 201211661662102 is 201266166112102.

It is a super-2 number, since 2×201211661662102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552779290099 + ... + 552779290462.

It is an arithmetic number, because the mean of its divisors is an integer number (23216730191802).

Almost surely, 2^{201211661662102} is an apocalyptic number.

201211661662102 is a deficient number, since it is larger than the sum of its proper divisors (170256021406730).

201211661662102 is a wasteful number, since it uses less digits than its factorization.

201211661662102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105558580583.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 201211661662102 in words is "two hundred one trillion, two hundred eleven billion, six hundred sixty-one million, six hundred sixty-two thousand, one hundred two".